WorldWideScience

Sample records for airplane hishigata ketsugoyokuki

  1. Airplane Ear

    Science.gov (United States)

    ... your flight. If you're prone to severe airplane ear and must fly often, your doctor may surgically place tubes in your eardrums to aid fluid drainage, ventilate your middle ear, and equalize the ... prevent airplane ear These additional tips can help young children ...

  2. General problem of the airplane

    Science.gov (United States)

    Richard, Maurice; Richard, Paul

    1922-01-01

    A series of equations relating to airplanes are given and examples listed. Some of the equations listed include: the speed, altitude and carrying capacity of various airplanes; weight of an airplane; weight of various parts of an airplane; the polars of the wings; speeds of airplanes; radius of action.

  3. Prospect of ultralight airplanes development

    Directory of Open Access Journals (Sweden)

    Adam KONICZEK

    2015-09-01

    Full Text Available The article presents characteristic of ultralight airplanes, rules and current interest of them. The purpose is to determine prospect of ultralight airplanes development on the basis of Civil Aviation Authority statistics analysis and trend of aviation market.

  4. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans-Christian; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases......, due to altered cabin pressure, increase the amount of potential flatus. Holding back flatus on an airplane may cause significant discomfort and physical symptoms, whereas releasing flatus potentially presents social complications. To avoid this problem we humbly propose that active charcoal should...... airplanes, by using a methane breath test or to alter the fibre content of airline meals in order to reduce its flatulent potential. We conclude that the use of active charcoal on airlines may improve flight comfort for all passengers....

  5. 14 CFR 36.7 - Acoustical change: Transport category large airplanes and jet airplanes.

    Science.gov (United States)

    2010-01-01

    ... airplanes and jet airplanes. 36.7 Section 36.7 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... § 36.7 Acoustical change: Transport category large airplanes and jet airplanes. (a) Applicability. This section applies to all transport category large airplanes and jet airplanes for which an acoustical change...

  6. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans C; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases...... airplanes, by using a methane breath test or to alter the fibre content of airline meals in order to reduce its flatulent potential. We conclude that the use of active charcoal on airlines may improve flight comfort for all passengers....

  7. 78 FR 28152 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-14

    ...-0416; Directorate Identifier 2012-NM-144-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A318-111 and -112 airplanes, Model A319 series airplanes, Model A320 series airplanes, and Model A321 series airplanes. The existing AD currently requires repetitive inspections of the 80VU rack lower...

  8. 78 FR 15874 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-13

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300- 600 series airplanes); and Model A310 series airplanes. This AD...

  9. 78 FR 70207 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-25

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4- 600R series airplanes; and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This AD was...

  10. 78 FR 9581 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-11

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called A300-600 series airplanes); and Model A310 series airplanes. This AD was...

  11. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans-Christian; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases......, due to altered cabin pressure, increase the amount of potential flatus. Holding back flatus on an airplane may cause significant discomfort and physical symptoms, whereas releasing flatus potentially presents social complications. To avoid this problem we humbly propose that active charcoal should...... be embedded in the seat cushion, since this material is able to neutralise the odour. Moreover active charcoal may be used in trousers and blankets to emphasise this effect. Other less practical or politically correct solutions to overcome this problem may be to restrict access of flatus-prone persons from...

  12. Airplane dopes and doping

    Science.gov (United States)

    Smith, W H

    1919-01-01

    Cellulose acetate and cellulose nitrate are the important constituents of airplane dopes in use at the present time, but planes were treated with other materials in the experimental stages of flying. The above compounds belong to the class of colloids and are of value because they produce a shrinking action on the fabric when drying out of solution, rendering it drum tight. Other colloids possessing the same property have been proposed and tried. In the first stages of the development of dope, however, shrinkage was not considered. The fabric was treated merely to render it waterproof. The first airplanes constructed were covered with cotton fabric stretched as tightly as possible over the winds, fuselage, etc., and flying was possible only in fine weather. The necessity of an airplane which would fly under all weather conditions at once became apparent. Then followed experiments with rubberized fabrics, fabrics treated with glue rendered insoluble by formaldehyde or bichromate, fabrics treated with drying and nondrying oils, shellac, casein, etc. It was found that fabrics treated as above lost their tension in damp weather, and the oil from the motor penetrated the proofing material and weakened the fabric. For the most part the film of material lacked durability. Cellulose nitrate lacquers, however were found to be more satisfactory under varying weather conditions, added less weight to the planes, and were easily applied. On the other hand, they were highly inflammable, and oil from the motor penetrated the film of cellulose nitrate, causing the tension of the fabric to be relaxed.

  13. 77 FR 37797 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-06-25

    ...-059-AD; Amendment 39-17092; AD 2012-12-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 series airplanes; Airbus Model A330-200 Freighter series airplanes; Airbus Model A330-300 series airplanes; Airbus Model...

  14. 14 CFR 125.93 - Airplane limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane limitations. 125.93 Section 125.93...: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Airplane Requirements § 125.93 Airplane...

  15. 78 FR 59295 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-09-26

    ...-0829; Directorate Identifier 2013-NM-085-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Model A330-201, -202, -203, -223, - 223F, -243, and -243F Airplanes, Model A330-300 series airplanes, and Model A340-200, A340-300, A340-500, and A340-600 series airplanes. AD 2010-23-12 requires...

  16. 77 FR 6023 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-07

    ...-0038; Directorate Identifier 2011-NM-209-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airplanes and Model A310-203, -204, - 221, and -222 airplanes. This proposed AD was prompted by a report of... explosion and consequent loss of the airplane. DATES: We must receive comments on this proposed AD by March...

  17. 78 FR 27015 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 and A330-300 series airplanes, and Model A340-200 and A340-300 series airplanes... seal on a solenoid. This AD requires, depending on airplane configuration, modifying three flight...

  18. 78 FR 7257 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-01

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT...-200 Freighter series airplanes; Model A330-200 and - 300 series airplanes; and Model A340-200 and -300 series airplanes. This AD was prompted by a report of a manufacturing defect in certain rods installed in...

  19. 78 FR 28159 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-14

    ...-0418; Directorate Identifier 2012-NM-200-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes...

  20. 14 CFR 23.3 - Airplane categories.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airplane categories. 23.3 Section 23.3... STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES General § 23.3 Airplane categories. (a) The normal category is limited to airplanes that have a seating configuration, excluding pilot...

  1. 78 FR 60798 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    ...-0363; Directorate Identifier 2013-NM-031-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... directive (AD) for all Airbus Model A330-200, -300 and -200 Freighter series airplanes, and Model A340-200, -300, -500, and -600 series airplanes. The NPRM proposed to require, for certain airplanes, revising...

  2. 78 FR 9787 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-12

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300- 600 series airplanes); and Airbus [[Page 9788

  3. 78 FR 21227 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200, A330-200 Freighter, A330-300, A340-200, and A340-300 series airplanes; and Model A340-541 airplanes and Model A340- 642 airplanes. This AD was prompted by reports of cracks in the...

  4. Mars Gashopper Airplane, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The Mars Gas Hopper Airplane, or "gashopper" is a novel concept for propulsion of a robust Mars flight and surface exploration vehicle that utilizes indigenous CO2...

  5. Small Airplane Certification Compliance Program

    Science.gov (United States)

    1997-01-02

    This advisory circular (AC) provides a compilation of historically acceptable means of compliance to specifically selected sections of Part 23 of the Federal Aviation Regulations that have become burdensome for small low performance airplanes to show...

  6. 77 FR 12989 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-05

    ...-16963; AD 2012-04-07] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for certain Airbus Model A330-200 series airplanes; Model A330-300 series airplanes... resulting in MLG structural damage. Airbus carried out an investigation, demonstrating that the life limit...

  7. 78 FR 69594 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-20

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airworthiness directive (AD) for all Airbus Model A330 series airplanes. The NPRM would have required... rulemaking (NPRM) for a new AD for all Airbus Model A330 series airplanes. The NPRM, FAA Docket No. FAA-2013...

  8. 78 FR 17071 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-20

    ...-17381; AD 2013-05-09] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for certain Airbus Model A330-200, -300, and -200 Freighter series airplanes; and all Airbus Model A340-200 and -300 series airplanes. This AD was prompted by a determination that the...

  9. 78 FR 14647 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-07

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... (AD) for certain Airbus Model A310-204, -222, -304, -322, and -324 airplanes. This AD was prompted by... airplane. DATES: This AD becomes effective April 11, 2013. The Director of the Federal Register approved...

  10. 78 FR 31386 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-24

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...) for all Airbus Model A330-200 and -300 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. That AD currently requires a one-time detailed inspection of both main landing gear...

  11. 78 FR 49915 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-16

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of..., for certain Airbus Model A310 series airplanes. AD 2004-15-07 required repetitive inspections for..., International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356...

  12. 78 FR 46536 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0668; Directorate Identifier 2013-NM-017-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... B4-600R series airplanes. This proposed AD was prompted by reports of cracks found in the bottom wing... at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the...

  13. 78 FR 8054 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-05

    ...-1321; Directorate Identifier 2011-NM-147-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A310 series airplanes. The existing AD currently requires repetitive inspections for fatigue cracking... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  14. 78 FR 40057 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0467; Directorate Identifier 2013-NM-023-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by reports of certain sliding windows that were... from safely evacuating the airplane during an emergency. DATES: We must receive comments on this...

  15. 77 FR 7523 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-13

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for all Airbus Model A340-600 series airplanes. This AD requires modifying the fire..., Transport Airplane Directorate, FAA 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone (425) 227...

  16. 78 FR 7261 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-01

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A310-203 airplanes. This AD was prompted by a report of an analysis that demonstrated a...-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone (425...

  17. 78 FR 78294 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-26

    ...-1031; Directorate Identifier 2013-NM-155-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Freighter, and A330-300 series airplanes; and Model A340-200, A340-300, A340-500, and A340-600 series airplanes. This proposed AD was prompted by the failure of the generator control unit-constant speed motor...

  18. 78 FR 15335 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-11

    ...-0208; Directorate Identifier 2012-NM-204-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by a determination that certain maintenance... airplane. DATES: We must receive comments on this proposed AD by April 25, 2013. ADDRESSES: You may send...

  19. 78 FR 12988 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-26

    ...-0094; Directorate Identifier 2012-NM-160-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by reports that certain trimmable horizontal... of control of the airplane. DATES: We must receive comments on this proposed AD by April 12, 2013...

  20. 14 CFR 121.605 - Airplane equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane equipment. 121.605 Section 121.605..., FLAG, AND SUPPLEMENTAL OPERATIONS Dispatching and Flight Release Rules § 121.605 Airplane equipment. No person may dispatch or release an airplane unless it is airworthy and is equipped as prescribed in § 121...

  1. 78 FR 40074 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0465; Directorate Identifier 2012-NM-085-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... series airplanes. This proposed AD was prompted by a determination that oxygen generators installed on a... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  2. 14 CFR 125.355 - Airplane equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane equipment. 125.355 Section 125.355...: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Flight Release Rules § 125.355 Airplane...

  3. 78 FR 15279 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-11

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 Freighter, -200, and -300 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. This AD was prompted by a report that erroneous height indication by one radio...

  4. 78 FR 37498 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-06-21

    ...-0463; Directorate Identifier 2012-NM-165-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Freighter, and -300 series airplanes. This proposed AD was prompted by a report that a certain wire harness... resulting in an uncontrolled fire and subsequent loss of the airplane. DATES: We must receive comments on...

  5. 77 FR 2928 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-01-20

    ...-0033; Directorate Identifier 2011-NM-086-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A310 series airplanes... require prohibiting in-flight use of the green EMPs; revising the airplane flight manual (AFM) limitations...

  6. 78 FR 65173 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-31

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by a determination that... Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this...

  7. 78 FR 54377 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-09-04

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports that certain... of control of the airplane. DATES: This AD becomes effective October 9, 2013. The Director of the...

  8. 78 FR 40069 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0539; Directorate Identifier 2012-NM-145-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... B4-600 and Model A300 B4-600R series airplanes. That AD currently requires repetitive inspections to... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  9. 78 FR 14029 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-04

    ...-0096; Directorate Identifier 2012-NM-143-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes..., A319-112, A319-115, A319-132, and A319-133 airplanes. This proposed AD was prompted by a report that a...-14 lower shell panel, was not installed on airplanes during production. This proposed AD would...

  10. 78 FR 19085 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-29

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports of oil residue... in reduced control of the airplane. DATES: This AD becomes effective May 3, 2013. The Director of the...

  11. 78 FR 37437 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-06-21

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... Airbus Model A318, A319, A320, and A321 series airplanes. That AD currently requires one-time and... production rework has been identified. This new AD adds airplanes with certain rudders to the AD...

  12. 78 FR 14162 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-05

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A310-203, -204, -222, -304, -322, and -324 airplanes. This AD was prompted by a design...: Dan Rodina, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA...

  13. 78 FR 39190 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-01

    ...-0543; Directorate Identifier 2012-NM-202-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by a determination that certain special washers... . You may review copies of the referenced service information at the FAA, Transport Airplane Directorate...

  14. 78 FR 68352 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-14

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-223F, -223, -321, -322, and -323 airplanes. This AD was prompted by fatigue load... damage to the airplane. DATES: This AD becomes effective December 19, 2013. The Director of the Federal...

  15. Headache during airplane travel ("airplane headache"): first case in Greece.

    Science.gov (United States)

    Kararizou, Evangelia; Anagnostou, Evangelos; Paraskevas, George P; Vassilopoulou, Sofia D; Naoumis, Dimitrios; Kararizos, Grigoris; Spengos, Konstantinos

    2011-08-01

    Headache related to airplane flights is rare. We describe a 37-year-old female patient with multiple intense, jabbing headache episodes over the last 3 years that occur exclusively during airplane flights. The pain manifests during take-off and landing, and is located always in the left retro-orbital and frontotemporal area. It is occasionally accompanied by dizziness, but no additional symptoms occur. Pain intensity diminishes and disappears after 15-20 min. Apart from occasional dizziness, no other symptoms occur. The patient has a history of tension-type headache and polycystic ovaries. Blood tests and imaging revealed no abnormalities. Here, we present the first case in Greece. We review the current literature on this rare syndrome and discuss on possible pathophysiology and the investigation of possible co-factors such as anxiety and depression.

  16. Crash Tests of Protective Airplane Floors

    Science.gov (United States)

    Carden, H. D.

    1986-01-01

    Energy-absorbing floors reduce structural buckling and impact forces on occupants. 56-page report discusses crash tests of energy-absorbing aircraft floors. Describes test facility and procedures; airplanes, structural modifications, and seats; crash dynamics; floor and seat behavior; and responses of anthropometric dummies seated in airplanes. Also presents plots of accelerations, photographs and diagrams of test facility, and photographs and drawings of airplanes before, during, and after testing.

  17. 76 FR 50706 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-16

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; e-mail: albert.mercado@faa... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  18. 76 FR 50405 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-15

    ...) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...; e-mail: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a notice of... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  19. 78 FR 72834 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2013-12-04

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  20. 76 FR 67341 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-11-01

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  1. 78 FR 25664 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-02

    ...: Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA... service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For... specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this...

  2. 77 FR 66762 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ... Rodina, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind... service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For... invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed...

  3. 77 FR 40485 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-10

    ...-121-AD; Amendment 39-17108; AD 2012-13-06] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... ] SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 series airplanes...: 2012-13-06 Airbus: Amendment 39-17108. Docket No. FAA-2012-0040; Directorate Identifier 2011-NM-121-AD...

  4. 77 FR 29207 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-17

    ...-17047; AD 2012-09-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... existing airworthiness directive (AD) for certain Airbus Model A319-111, -112, -113, -114, -115, -131, -132... operational Model A320-111 airplanes in the United States and Airbus intends to remove this model from the...

  5. 14 CFR 125.75 - Airplane flight manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane flight manual. 125.75 Section 125... OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6... Airplane flight manual. (a) Each certificate holder shall keep a current approved Airplane Flight Manual or...

  6. Error Analysis of Determining Airplane Location by Global Positioning System

    OpenAIRE

    Hajiyev, Chingiz; Burat, Alper

    1999-01-01

    This paper studies the error analysis of determining airplane location by global positioning system (GPS) using statistical testing method. The Newton Rhapson method positions the airplane at the intersection point of four spheres. Absolute errors, relative errors and standard deviation have been calculated The results show that the positioning error of the airplane varies with the coordinates of GPS satellite and the airplane.

  7. 14 CFR 21.5 - Airplane or Rotorcraft Flight Manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airplane or Rotorcraft Flight Manual. 21.5... CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS General § 21.5 Airplane or Rotorcraft Flight Manual. (a) With each airplane or rotorcraft that was not type certificated with an Airplane or Rotorcraft Flight Manual...

  8. 75 FR 69745 - Aging Airplane Program: Widespread Fatigue Damage

    Science.gov (United States)

    2010-11-15

    ... LOV into the maintenance program for that airplane. Operators may not fly an airplane beyond its LOV... al. Aging Airplane Program: Widespread Fatigue Damage; Final Rule #0;#0;Federal Register / Vol. 75...; Amendment Nos. 25-132, 26-5, 121-351, 129- 48] RIN 2120-AI05 Aging Airplane Program: Widespread Fatigue...

  9. Optimal back-to-front airplane boarding.

    Science.gov (United States)

    Bachmat, Eitan; Khachaturov, Vassilii; Kuperman, Ran

    2013-06-01

    The problem of finding an optimal back-to-front airplane boarding policy is explored, using a mathematical model that is related to the 1+1 polynuclear growth model with concave boundary conditions and to causal sets in gravity. We study all airplane configurations and boarding group sizes. Optimal boarding policies for various airplane configurations are presented. Detailed calculations are provided along with simulations that support the main conclusions of the theory. We show that the effectiveness of back-to-front policies undergoes a phase transition when passing from lightly congested airplanes to heavily congested airplanes. The phase transition also affects the nature of the optimal or near-optimal policies. Under what we consider to be realistic conditions, optimal back-to-front policies lead to a modest 8-12% improvement in boarding time over random (no policy) boarding, using two boarding groups. Having more than two groups is not effective.

  10. Optimal back-to-front airplane boarding

    Science.gov (United States)

    Bachmat, Eitan; Khachaturov, Vassilii; Kuperman, Ran

    2013-06-01

    The problem of finding an optimal back-to-front airplane boarding policy is explored, using a mathematical model that is related to the 1+1 polynuclear growth model with concave boundary conditions and to causal sets in gravity. We study all airplane configurations and boarding group sizes. Optimal boarding policies for various airplane configurations are presented. Detailed calculations are provided along with simulations that support the main conclusions of the theory. We show that the effectiveness of back-to-front policies undergoes a phase transition when passing from lightly congested airplanes to heavily congested airplanes. The phase transition also affects the nature of the optimal or near-optimal policies. Under what we consider to be realistic conditions, optimal back-to-front policies lead to a modest 8-12% improvement in boarding time over random (no policy) boarding, using two boarding groups. Having more than two groups is not effective.

  11. Recurring norovirus transmission on an airplane.

    Science.gov (United States)

    Thornley, Craig N; Emslie, Nicola A; Sprott, Tim W; Greening, Gail E; Rapana, Jackie P

    2011-09-01

    Previously reported outbreaks of norovirus gastroenteritis associated with aircraft have been limited to transmission during a single flight sector. During October 2009, an outbreak of diarrhea and vomiting occurred among different groups of flight attendants who had worked on separate flight sectors on the same airplane. We investigated the cause of the outbreak and whether the illnesses were attributable to work on the airplane. Information was obtained from flight attendants on demographic characteristics, symptoms, and possible transmission risk factors. Case patients were defined as flight attendants with diarrhea or vomiting airplane during 13-18 October 2009. Stool samples were tested for norovirus RNA. A passenger had vomited on the Boeing 777-200 airplane on the 13 October flight sector. Sixty-three (82%) of 77 flight attendants who worked on the airplane during 13-18 October provided information, and 27 (43%) met the case definition. The attack rate among flight attendants decreased significantly over successive flight sectors from 13 October onward (P airplane during successive flight sectors. Airlines should make provision for adequate disinfection of airplanes with use of products effective against norovirus and other common infectious agents after vomiting has occurred.

  12. 14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.

    Science.gov (United States)

    2010-01-01

    ... the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are...-inoperative, en route, net flight path data in the Airplane Flight Manual, allows the airplane to fly from the... Airplane Flight Manual, allows the airplane to fly from the point where the two engines are assumed to fail...

  13. New Albatross commercial airplane "L 58"

    Science.gov (United States)

    Meyer, G

    1923-01-01

    The "L 58" is a monoplane with cantilever wings joined directly to the fuselage. It accordingly belongs to the new school of airplane construction, as founded and developed in Germany. A list of performance characteristics is included.

  14. 77 FR 51717 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... certain Airbus Model A300 B4-2C, B4-103, and B4- 203 airplanes; and Model A300 B4-601, B4-603, B4-620, B4... this proposed AD, contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707...

  15. 78 FR 32345 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-30

    ...-17460; AD 2013-10-07] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for all Airbus Model A300 B4-601, B4-603, B4-620, B4-605R, and B4-622R airplanes... comments received. Request for a Copy of the Service Information FedEx requested that copies of Airbus...

  16. [A rarely known headache: Airplane travel headache].

    Science.gov (United States)

    Azman, Filiz; Erkılınç, Büşra; Çabalar, Murat; Çağırıcı, Sultan; Yayla, Vildan

    2017-01-01

    Recently, headache associated with airplane travel has gained importance with case reports and took its place in the classification of headache in 2013. This rare condition has different spesific characteristic from the primary headaches and its pathophysiology is not clear yet. In this case report, a 27-years-old female patient was diagnosed with the headache associated with airplane travel by history, examination and imaging findings. The possible pathophysiology and treatment were discussed.

  17. Factors of airplane engine performance

    Science.gov (United States)

    Gage, Victor R

    1921-01-01

    This report is based upon an analysis of a large number of airplane-engine tests. It contains the results of a search for fundamental relations between many variables of engine operation. The data used came from over 100 groups of tests made upon several engines, primarily for military information. The types of engines were the Liberty 12 and three models of the Hispano-Suiza. The tests were made in the altitude chamber, where conditions simulated altitudes up to about 30,000 feet, with engine speeds ranging from 1,200 to 2,200 r.p.m. The compression ratios of the different engines ranged from under 5 to over 8 to 1. The data taken on the tests were exceptionally complete, including variations of pressure and temperature, besides the brake and friction torques, rates of fuel and air consumption, the jacket and exhaust heat losses.

  18. 77 FR 56991 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-09-17

    ... FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901....mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a supplemental notice of proposed.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  19. 75 FR 59658 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-09-28

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  20. Modeling of terminal-area airplane fuel consumption

    Science.gov (United States)

    2009-08-01

    Accurate modeling of airplane fuel consumption is necessary for air transportation policy-makers to properly : adjudicate trades between competing environmental and economic demands. Existing public models used for : computing terminal-area airplane ...

  1. 14 CFR 125.407 - Maintenance log: Airplanes.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance log: Airplanes. 125.407 Section... Maintenance log: Airplanes. (a) Each person who takes corrective action or defers action concerning a reported... record the action taken in the airplane maintenance log in accordance with part 43 of this chapter. (b...

  2. 77 FR 69747 - Airworthiness Directives; The Boeing Company Model Airplanes

    Science.gov (United States)

    2012-11-21

    ....'' SWA states that this would eliminate any confusion as to whether the subject inspection is to be done... 737-600 is a next generation (NG) airplane, not a 737 ``Classic'' airplane. Boeing also asked that the.... operators airplanes Various inspections (retained 4 work-hours x $85 per $0 $340 per inspection 296 $100,640...

  3. 14 CFR 121.161 - Airplane limitations: Type of route.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane limitations: Type of route. 121... OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Aircraft Requirements § 121.161 Airplane... specifications, no certificate holder may operate a turbine-engine-powered airplane over a route that contains a...

  4. 14 CFR 121.570 - Airplane evacuation capability.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane evacuation capability. 121.570... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Flight Operations § 121.570 Airplane evacuation capability. (a) No person may cause an airplane carrying passengers to be moved on the surface, take off, or...

  5. 14 CFR 121.303 - Airplane instruments and equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane instruments and equipment. 121.303... Airplane instruments and equipment. (a) Unless otherwise specified, the instrument and equipment... airspeed limitation and item of related information in the Airplane Flight Manual and pertinent placards...

  6. 14 CFR 23.71 - Glide: Single-engine airplanes.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Glide: Single-engine airplanes. 23.71... AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Flight Performance § 23.71 Glide: Single-engine airplanes. The maximum horizontal distance traveled in still air, in nautical miles...

  7. 14 CFR 125.91 - Airplane requirements: General.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane requirements: General. 125.91... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Airplane Requirements...

  8. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  9. 14 CFR 121.141 - Airplane flight manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane flight manual. 121.141 Section 121... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Manual Requirements § 121.141 Airplane flight manual. (a) Each certificate holder shall keep a current approved airplane flight manual for each type of...

  10. 14 CFR 121.503 - Flight time limitations: Pilots: airplanes.

    Science.gov (United States)

    2010-01-01

    ... Operations § 121.503 Flight time limitations: Pilots: airplanes. (a) A certificate holder conducting supplemental operations may schedule a pilot to fly in an airplane for eight hours or less during any 24... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Flight time limitations: Pilots: airplanes...

  11. 77 FR 36950 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2012-06-20

    ... air turbine, which will supply the airplane systems (including fly-by-wire) with sufficient electrical... Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION... a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 7X airplanes. The...

  12. Nonlinear analysis of a reactor building for airplane impact loadings

    International Nuclear Information System (INIS)

    Zimmermann, T.; Rodriguez, C.; Rebora, B.

    1981-01-01

    The purpose is to analyze the influence of material nonlinear behavior on the response of a reinforced concrete reactor building and on equipment response for airplane impact loadings. Two analyses are performed: first, the impact of a slow-flying commercial airplane (Boeing 707), then the impact of a fast flying military airplane (Phantom). (orig./HP)

  13. 78 FR 25905 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-03

    ... fly an airplane beyond its LOV, unless an extended LOV is approved. The WFD rule (75 FR 69746... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM... airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating...

  14. 78 FR 13463 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-28

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... published in the Federal Register. That AD applies to certain The Boeing Company Model 757 airplanes. That... repetitive inspections for that windshield. For certain The Boeing Company Model 757 airplanes, AD 2012-25-03...

  15. 77 FR 47267 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-08

    ... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final...). ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...). The SNPRM applied to all Boeing Model 747-100B SUD, 747-300, 747-400, and 747-400D series airplanes...

  16. 78 FR 53078 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-28

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for certain The Boeing Company Model 747-200B, -200C, -200F, -300, and 747SR series airplanes... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  17. 78 FR 24673 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-26

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for The Boeing Company Model 787-8 airplanes. That AD currently requires modification of the... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  18. 78 FR 27001 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 737-200, -200C, -300, -400, and - 500 series airplanes. That AD currently requires a...: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data...

  19. 78 FR 9 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-02

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 737-300, -400, and -500 series airplanes. That AD currently requires repetitive... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  20. A study of the factors affecting the range of airplanes

    Science.gov (United States)

    Biermann, David

    1937-01-01

    A study was made of the most important factors affecting the range of airplanes. Numerical examples are given showing the effects of different variables on the range of a two-engine airplane. The takeoff problems of long-range airplanes are analyzed.

  1. 77 FR 71357 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2012-11-30

    ... Directives; Pacific Aerospace Limited Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for all Pacific Aerospace Limited Models FU24-954 and FU24A-954 airplanes that... INFORMATION CONTACT: Karl Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room...

  2. 14 CFR 135.422 - Aging airplane inspections and records reviews for multiengine airplanes certificated with nine...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records reviews for multiengine airplanes certificated with nine or fewer passenger seats. 135.422 Section 135.422... Maintenance, and Alterations § 135.422 Aging airplane inspections and records reviews for multiengine...

  3. Noise exposure levels from model airplane engines.

    Science.gov (United States)

    Pearlman, R C; Miller, M

    1985-01-01

    Previous research indicates that noise levels from unmuffled model airplane engines produce sufficient noise to cause TTS. The present study explored SPLs of smaller engines under 3.25 cc (.19 cu. in.) and the effectiveness of engine mufflers. Results showed that model airplanes can exceed a widely used damage risk criterion (DRC) but that engine mufflers can reduce levels below DRC. Handling model gasoline engines should be added to the list of recreational activities such as snow-mobile and motorcycle riding, shooting, etc. in which the participant's hearing may be in jeopardy. Suggestions are presented to the model engine enthusiast for avoiding damage to hearing.

  4. Atmospheric electron flux at airplane altitude

    International Nuclear Information System (INIS)

    Enomoto, R.; Chiba, J.; Ogawa, K.; Sumiyoshi, T.; Takasaki, F.; Kifune, T.; Matsubara, Y.; Nishimura, J.

    1991-01-01

    We have developed a new detector to systematically measure the cosmic-ray electron flux at airplane altitudes. We loaded a lead-glass-based electron telescope onto a commercial cargo airplane. The first experiment was carried out using the air route between Narita (Japan) and Sydney (Australia); during this flight we measured the electron flux at various altitudes and latitudes. The thresholds of the electron energies were 1, 2, and 4 GeV. The results agree with a simple estimation using one-dimensional shower theory. A comparison with a Monte Carlo calculation was made

  5. Performance Comparison of the Optimized Inverted Joined Wing Airplane Concept and Classical Configuration Airplanes

    Directory of Open Access Journals (Sweden)

    Sieradzki Adam

    2016-09-01

    Full Text Available The joined wing concept is an unconventional airplane configuration, known since the mid-twenties of the last century. It has several possible advantages, like reduction of the induced drag and weight due to the closed wing concept. The inverted joined wing variant is its rarely considered version, with the front wing being situated above the aft wing. The following paper presents a performance prediction of the recently optimized configuration of this airplane. Flight characteristics obtained numerically were compared with the performance of two classical configuration airplanes of similar category. Their computational fluid dynamics (CFD models were created basing on available documentation, photographs and some inverse engineering methods. The analysis included simulations performed for a scale of 3-meter wingspan inverted joined wing demonstrator and also for real-scale manned airplanes. Therefore, the results of CFD calculations allowed us to assess the competitiveness of the presented concept, as compared to the most technologically advanced airplanes designed and manufactured to date. At the end of the paper, the areas where the inverted joined wing is better than conventional airplane were predicted and new research possibilities were described.

  6. 77 FR 1622 - Airworthiness Directives; Socata Airplanes

    Science.gov (United States)

    2012-01-11

    ... the FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  7. 77 FR 36125 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2012-06-18

    ... FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  8. 77 FR 14314 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2012-03-09

    ... receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  9. 77 FR 66764 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ... Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton...://www.airbus.com . You may review copies of the referenced service information at the FAA, Transport... the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will...

  10. 14 CFR 129.25 - Airplane security.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane security. 129.25 Section 129.25... security. Foreign air carriers conducting operations under this part must comply with the applicable security requirements in 49 CFR chapter XII. [67 FR 8350, Feb. 22, 2002] ...

  11. 78 FR 25902 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-03

    ... the Alpha Prot of the normal law to activate. Under normal flight conditions (in normal law), if the Alpha Prot activates and Mach number increases, the flight control laws order a pitch down of the... Airplane Flight Manual (AFM) A330 Temporary Revision (TR) TR293 issue 1 and Airbus AFM A340 TR294 issue 1...

  12. 78 FR 1723 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-01-09

    ... Prot of the normal law to activate. Under normal flight conditions (in normal law), if the Alpha Prot activates and Mach number increases, the flight control laws order a pitch down of the airplane that the... Temporary Revision TR286, Issue 1.0, dated December 17, 2012, to advise the flight crew of emergency...

  13. 78 FR 76572 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-18

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318..., except Federal holidays. For Airbus service information identified in this proposed AD, contact Airbus...

  14. 76 FR 69168 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-2C, B4-103... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  15. 77 FR 51729 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200, A330-300... identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte...

  16. 77 FR 75825 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ...-260-AD; Amendment 39-17293; AD 2012-25-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 and -300 series... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-25-12 Airbus: Amendment 39-17293...

  17. 77 FR 75833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ...-183-AD; Amendment 39-17287; AD 2012-25-06] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are superseding an existing airworthiness directive (AD) for certain Airbus Model A300 B4-2C... stringer 32 and stringer 33. The subject aeroplane had previously been modified in accordance with Airbus...

  18. 77 FR 70369 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-26

    ...-182-AD; Amendment 39-17266; AD 2012-23-10] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A318, A319, A320, and... Continuing Airworthiness Information (MCAI) states: Two occurrences on Airbus A320 aeroplanes have been...

  19. 77 FR 17327 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-26

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2011-1087; Directorate Identifier 2011-NM-032-AD; Amendment 39-16967; AD 2012-04-11] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...

  20. 77 FR 15644 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-16

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200 and -200... information identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point...

  1. 77 FR 56172 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-12

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 and -300 series...), 40113, 44701. Sec. 39.13 2. The FAA amends Sec. 39.13 by adding the following new AD: Airbus: Docket No...

  2. 78 FR 22175 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-15

    ...-122-AD; Amendment 39-17408; AD 2013-07-04] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are superseding an existing airworthiness directive (AD) for certain Airbus Model A319, A320... revealed that the installed Tie Down Points of YZ latches on the Cargo Loading System (CLS) of Airbus A319...

  3. 77 FR 19067 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ...-047-AD; Amendment 39-16992; AD 2012-06-11] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model... in the AD docket. Relevant Service Information Airbus has issued Mandatory Service Bulletin A320-57...

  4. 77 FR 58785 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-24

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-601, B4-603, B4... this proposed AD, contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707...

  5. 77 FR 49386 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-16

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318..., except Federal holidays. For Airbus service information identified in this proposed AD, contact Airbus...

  6. 77 FR 65799 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ...-245-AD; Amendment 39-17236; AD 2012-21-20] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 freighter...: 2012-21-20 Airbus: Amendment 39-17236. Docket No. FAA-2012-0596; Directorate Identifier 2011-NM-245-AD...

  7. 77 FR 46937 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-07

    ...-001-AD; Amendment 39-17143; AD 2012-15-14] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A300 B4-103, B4-203... the RH and LH MLG rib 5 aft bearing attachment at an early stage, Airbus has developed a new...

  8. 77 FR 57003 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-17

    ...-058-AD; Amendment 39-17189; AD 2012-18-12] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A318, A319, and A320...: 2012-18-12 Airbus: Amendment 39-17189. Docket No. FAA-2011-1167; Directorate Identifier 2011-NM-058-AD...

  9. 77 FR 73343 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-10

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R, and... holidays. For Airbus service information identified in this proposed AD, contact Airbus SAS-EAW...

  10. 77 FR 19071 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ...-056-AD; Amendment 39-16991; AD 2012-06-10] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model... condition for the specified products. The MCAI states: During structural part assembly in Airbus production...

  11. 77 FR 19059 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ...-17003; AD 2012-06-22] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... are adopting a new airworthiness directive (AD) for all Airbus Model A340-500 and Model -600 series... the AD docket. Relevant Service Information Airbus has issued Mandatory Service Bulletin A340-57-5029...

  12. 77 FR 42952 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-23

    ...-139-AD; Amendment 39-17127; AD 2012-14-13] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A318-112 and -121... part assembly in Airbus production line, some nuts Part Number (P/N) ASNA2531-4 were found cracked...

  13. 78 FR 29261 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-20

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330... this proposed AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707...

  14. 77 FR 58789 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-24

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter series... this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707...

  15. 77 FR 26996 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A320-214 and-232... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  16. 77 FR 46935 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-07

    ...-210-AD; Amendment 39-17138; AD 2012-15-09] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) certain Airbus Model A310-203, -221, and -222... lives will be published in the Airbus A310 Airworthiness Limitations Section (ALS) Part 1 and bolts must...

  17. 77 FR 59149 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-26

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-600, B4-600R...), 40113, 44701. Sec. 39.13 2. The FAA amends Sec. 39.13 by adding the following new AD: Airbus: Docket No...

  18. 78 FR 32347 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-30

    ...-002-AD; Amendment 39-17459; AD 2013-10-06] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330... information: Airbus Mandatory Service Bulletin A330-56-3009, Revision 02, including Appendix 01, dated...

  19. 77 FR 69391 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-19

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model..., contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  20. 77 FR 16492 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-21

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318-112, and -121... identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte...

  1. 77 FR 65808 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ...-202-AD; Amendment 39-17233; AD 2012-21-17] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A320-214 and -232... upper panels on Frame 35 in Airbus A320 final assembly line. Investigations revealed that medium head...

  2. 77 FR 60325 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-03

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... directive (AD) that would supersede an existing AD for certain Airbus Model A318, A319, A320, and A321... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  3. 77 FR 24137 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-23

    ...-16983; AD 2012-06-02] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation... directive (AD) that published in the Federal Register. That AD applies to all Airbus Model A300 B4-600, B4... aluminum high pressure pipe with a new corrosion resistant stainless steel pipe, for all Airbus Model A300...

  4. 77 FR 15291 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-15

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-603, B4-605R, and..., except Federal holidays. For service information identified in this proposed AD, contact Airbus SAS--EAW...

  5. 76 FR 68671 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-07

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300...., Monday through Friday, except Federal holidays. For Airbus service information identified in this...

  6. 77 FR 65812 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ...-240-AD; Amendment 39-17235; AD 2012-21-19] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 freighter series... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-21-19 Airbus: Amendment 39-17235...

  7. 76 FR 72350 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-23

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model..., contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  8. 77 FR 29210 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-17

    ...-091-AD; Amendment 39-17048; AD 2012-09-13] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 freighter.... ] Changes to the AD Airbus has issued Mandatory Service Bulletins A330-32-3241 and A340-32-4282, both...

  9. 78 FR 52405 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-23

    ...-187-AD; Amendment 39-17549; AD 2013-16-11] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-300, A340-200...: 2013-16-11 Airbus: Amendment 39-17549. Docket No. FAA-2013-0335; Directorate Identifier 2012-NM-187-AD...

  10. 77 FR 11793 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-28

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-103, B4-203..., except Federal holidays. For service information identified in this proposed AD, contact Airbus SAS--EAW...

  11. 77 FR 26998 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-243, -243F, -342..., between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For Airbus service information...

  12. 77 FR 46929 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-07

    ...-17145; AD 2011-19-01 R1] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal... existing airworthiness directive (AD) that applies to all Airbus Model A318, A319, A320, and A321 series..., 2011), and adding the following new AD: 2011-19-01 R1 Airbus: Amendment 39-17145; Docket No. FAA-2012...

  13. 77 FR 60331 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-03

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318, A319, A320, and... information identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice...

  14. 77 FR 65146 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-25

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, -200..., contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  15. 77 FR 24833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-26

    ...: Hydraulic Power. (e) Reason This AD was prompted by a report of an electrical arc and hydraulic haze in the...)(1) and (g)(2) of this AD. (1) Install in the cockpit on the hydraulic power overhead panel 427VU, a... Airbus Model A310 series airplanes. This AD was prompted by a report of an electrical arc and hydraulic...

  16. Radiation exposure of airplane crews. Exposure levels

    International Nuclear Information System (INIS)

    Bergau, L.

    1995-01-01

    Even at normal height levels of modern jet airplanes, the flying crew is exposed to a radiation level which is higher by several factors than the terrestrial radiation. There are several ways in which this can be hazardous; the most important of these is the induction of malignant growths, i.e. tumours. (orig./MG) [de

  17. Oblique-Flying-Wing Supersonic Transport Airplane

    Science.gov (United States)

    Van Der Velden, Alexander J. M.

    1992-01-01

    Oblique-flying-wing supersonic airplane proposed as possible alternative to B747B (or equivalent). Tranports passengers and cargo as fast as twice speed of sound at same cost as current subsonic transports. Flies at same holding speeds as present supersonic transports but requires only half takeoff distance.

  18. Flying spin qualities testing of airplane

    Directory of Open Access Journals (Sweden)

    Kostić Čedomir J.

    2015-01-01

    Full Text Available In this paper is presented the theoretical analysis of origins and characteristics of spinning motion. There are precise explanation of every stage spin flight and basic meaning of notion. Personated equation of motion in spin and equitation of motion airplane in settled spin motion, analysis of them and general recommendation for pilots for recovering from spins. Introduced in valid military and civil specifications flight test demonstration requirements for departure resistance and flying stall and spin qualities testing of airplane. Special attention was given on predicting departure, stall and spin susceptibility and theoretical analysis in the name of magnify flight testing security. There are explanation of test equipment and methodology of flying qualities testing of airplanes. Like a support of this theme are described method and results of flight stall and spin qualities testing of airplane G-4(N-62 super see-gull with precise recommendation for pilots for recovering from spins, from TOC SLI VS (Technical testing center, department for fight testing Air Force of Serbia.

  19. Developing aircraft photonic networks for airplane systems

    DEFF Research Database (Denmark)

    White, Henry J.; Brownjohn, Nick; Baptista, João

    2013-01-01

    Achieving affordable high speed fiber optic communication networks for airplane systems has proved to be challenging. In this paper we describe a summary of the EU Framework 7 project DAPHNE (Developing Aircraft Photonic Networks). DAPHNE aimed to exploit photonic technology from terrestrial...

  20. 76 FR 73496 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-29

    ... tests, cracks appeared on the right (RH) and left (LH) sides between the crossing area of the keel beam... AD; except for airplanes on which a crack was detected at hole 5 before oversizing of the keel beam... aeroplanes fatigue tests, cracks appeared on the right (RH) and left (LH) sides between the crossing area of...

  1. 77 FR 26937 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... penetrating through the rear spar and into a fuel tank, consequent fuel loss, and reduced structural integrity... tank, consequent fuel loss, and reduced structural integrity of the airplane. (f) Compliance You are... fittings at the lower flange, and repair if necessary; and provides an optional spot-facing modification...

  2. 76 FR 35344 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-06-17

    ... FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901.... Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  3. 76 FR 3854 - Airworthiness Directives; REIMS AVIATION S.A. Model F406 Airplanes

    Science.gov (United States)

    2011-01-21

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  4. 78 FR 21700 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2013-04-11

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) Transportation Airplane and Engine (TAE) Subcommittee to discuss transport airplane and engine issues. DATES: The...

  5. 78 FR 27005 - Airworthiness Directives; Revo, Incorporated Airplanes

    Science.gov (United States)

    2013-05-09

    ..., Incorporated Models COLONIAL C-1, COLONIAL C-2, LAKE LA-4, LAKE LA-4A, LAKE LA-4P, and LAKE LA-4-200 airplanes... LA-4A, LAKE LA-4P, and LAKE LA-4-200 airplanes, all serial numbers, that are certificated in any...-4P, and LAKE LA-4-200 airplanes: Within the next 25 hours TIS after July 8, 2005 (the effective date...

  6. 78 FR 61161 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-10-03

    ... new airworthiness directive (AD) for certain The Boeing Company Model DC-10-10 and MD-10-10F airplanes... reinstallation of a reduced life bolt on other Model DC-10-10 and MD-10-10 airplanes. Subsequent paragraphs have...) Applicability This AD applies to The Boeing Company Model DC-10-10 and MD-10- 10F airplanes, certificated in any...

  7. 75 FR 16660 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-04-02

    ...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  8. 77 FR 16430 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-21

    ...-104-AD; Amendment 39-16983; AD 2012-06-02] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R, and... use of Airbus SB A310- ] 52-2067 and Airbus SB A300-52-6065 at original issue is acceptable to comply...

  9. 77 FR 26154 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-03

    ...-167-AD; Amendment 39-17037; AD 2012-09-02] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes.... SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 B2-1C, B2K-3C, B2... 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-09-02 Airbus: Amendment 39-17037...

  10. Airplane impact on nuclear power plants

    International Nuclear Information System (INIS)

    Eibl, J.

    2003-01-01

    A short report on investigations of nuclear power plants under airplane attack is given. It concerns the modeling of planes with regard to mass and stiffness, the relevant plane velocity and finally the determination of load-time functions. The necessary analysis of the concrete containment structure is shortly addressed. Finally a proposal for a structure to keep planes from such building structures is discussed. (author)

  11. Advanced Subsonic Airplane Design and Economic Studies

    Science.gov (United States)

    Liebeck, Robert H.; Andrastek, Donald A.; Chau, Johnny; Girvin, Raquel; Lyon, Roger; Rawdon, Blaine K.; Scott, Paul W.; Wright, Robert A.

    1995-01-01

    A study was made to examine the effect of advanced technology engines on the performance of subsonic airplanes and provide a vision of the potential which these advanced engines offered. The year 2005 was selected as the entry-into-service (EIS) date for engine/airframe combination. A set of four airplane classes (passenger and design range combinations) that were envisioned to span the needs for the 2005 EIS period were defined. The airframes for all classes were designed and sized using 2005 EIS advanced technology. Two airplanes were designed and sized for each class: one using current technology (1995) engines to provide a baseline, and one using advanced technology (2005) engines. The resulting engine/airframe combinations were compared and evaluated on the basis on sensitivity to basic engine performance parameters (e.g. SFC and engine weight) as well as DOC+I. The advanced technology engines provided significant reductions in fuel burn, weight, and wing area. Average values were as follows: reduction in fuel burn = 18%, reduction in wing area = 7%, and reduction in TOGW = 9%. Average DOC+I reduction was 3.5% using the pricing model based on payload-range index and 5% using the pricing model based on airframe weight. Noise and emissions were not considered.

  12. 77 FR 1 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-01-03

    ... airplane, this AD states not to install a separation bolt having P/N 7292520-678 on any airplane as of the... United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section... government and the States, or on the distribution of power and responsibilities among the various levels of...

  13. 77 FR 66417 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-11-05

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 [[Page 66418...: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  14. 77 FR 16488 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-03-21

    ...-100, DHC-8-200, and DHC-8-300 series airplanes. This proposed AD was prompted by reports of hydraulic... caps, which could result in loss of the number 2 hydraulic system and damage to airplane structures... the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will...

  15. Variable-Structure Control of a Model Glider Airplane

    Science.gov (United States)

    Waszak, Martin R.; Anderson, Mark R.

    2008-01-01

    A variable-structure control system designed to enable a fuselage-heavy airplane to recover from spin has been demonstrated in a hand-launched, instrumented model glider airplane. Variable-structure control is a high-speed switching feedback control technique that has been developed for control of nonlinear dynamic systems.

  16. 77 FR 21426 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  17. 78 FR 49217 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-13

    ...-1069; Directorate Identifier 2012-NM-044-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... directive (AD), for all The Boeing Company Model 727 airplanes, which proposed to supersede an existing AD... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  18. 77 FR 49708 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-17

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing.... ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  19. 78 FR 27010 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... certain The Boeing Company Model 737-100, -200, -200C, - 300, -400, and -500 series airplanes. Those ADs..., December 18, 2000). ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  20. 78 FR 26286 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-06

    ...-0425; Directorate Identifier 2011-NM-273-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... directive (AD) for all The Boeing Company Model 717-200 airplanes. That NPRM proposed requiring repetitive... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  1. 78 FR 52836 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  2. 78 FR 27020 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are revising an existing airworthiness directive (AD) for all The Boeing... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box...

  3. 78 FR 3365 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-16

    ...-1317; Directorate Identifier 2011-NM-194-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Airplanes... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  4. 78 FR 78701 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  5. 78 FR 57542 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-19

    ...-0789; Directorate Identifier 2013-NM-127-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 777-200 and -300 series airplanes. AD 2012-12-08 requires an inspection for the part... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  6. 78 FR 73739 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-09

    ...-0981; Directorate Identifier 2013-NM-032-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... all The Boeing Company Model MD-90- 30 airplanes. AD 97-11-07 and AD 99-18-23 currently require... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  7. 77 FR 24835 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-26

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing.... ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  8. 77 FR 48423 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-14

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box...

  9. 77 FR 63714 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-17

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  10. 78 FR 15332 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-11

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to all The Boeing Company Model 737-300, -400, and - 500 series airplanes. The... Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing...

  11. 78 FR 28128 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-05-14

    ... Airworthiness Directives; the Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  12. 77 FR 71723 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-04

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to certain The Boeing Company Model 737-200, -200C, - 300, and -400 series... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  13. 77 FR 40307 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-09

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 747-400... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC...

  14. 78 FR 57049 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-09-17

    ... Airworthiness Directives; the Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing..., 2013. ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes...

  15. 77 FR 59728 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-01

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model DC-10-10, DC-10-10F, DC-10-15, DC- 10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood...

  16. 78 FR 68693 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-11-15

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing.... ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  17. 77 FR 12166 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-29

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box...; email [email protected]boeing.com ; Internet https://www.myboeingfleet.com . You may review copies of the...

  18. 77 FR 33619 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-07

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 767-200, -300, and -400ER series airplanes. That AD currently requires replacing the... FR 8717, February 26, 2009). ADDRESSES: For service information identified in this AD, contact Boeing...

  19. 78 FR 11972 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-02-21

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  20. 77 FR 24355 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-24

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  1. 78 FR 49229 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-13

    ...-0690; Directorate Identifier 2013-NM-088-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 737-600, -700, - 700C, and -800 series airplanes. AD 2009-24-07 currently requires... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  2. 77 FR 61731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-11

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to all The Boeing Company Model 727 airplanes. The existing AD currently... Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing...

  3. 78 FR 78703 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  4. 77 FR 21429 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  5. 78 FR 40060 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0468; Directorate Identifier 2012-NM-147-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce engines. The existing AD... identified in this AD, Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  6. 78 FR 46532 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0616; Directorate Identifier 2007-NM-353-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... directive (AD) for all The Boeing Company Model 767 airplanes. That NPRM proposed to require repetitive... Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA...

  7. 77 FR 5386 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-03

    ... airplanes. The airplane manufacturer name stated in the subject line, product identification section, and..., 2011), currently requires repetitive inspections for cracking on the lower cap of the rear spar of the..., product identification section, and paragraph (c) of AD 2011-24-04, Amendment 39-16868 (76 FR 73491...

  8. Topological estimation of aerodynamic controlled airplane system functionality of quality

    Directory of Open Access Journals (Sweden)

    С.В. Павлова

    2005-01-01

    Full Text Available  It is suggested to use topological methods for stage estimation of aerodynamic airplane control in widespread range of its conditions The estimation is based on normalized stage virtual non-isotropy of configurational airplane systems calculation.

  9. 77 FR 55773 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-11

    ... loss of control of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these... horizontal stabilizer to sustain the required limit loads and consequent loss of control of the airplane. (f...

  10. 77 FR 31758 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2012-05-30

    ... the loss of automatic speed control, and consequent loss of control of the airplane. Since the... are reopening the comment period to allow the public the chance to comment on this proposed change... and the loss of automatic speed control, and may lead to loss of control of the airplane.'' Boeing...

  11. DETERMINATION OF PARASITE DRAG FOR COMMERCIAL AIRPLANE AT TRANSONIC SPEEDS

    OpenAIRE

    V. I. Shevyakov

    2014-01-01

    It considers the task of determination of parasite drag for subsonic commercial airplane on the base of theoretical calculation procedures. It contains the procedure for clarification of empirical approach to calculation of parasite drag at high speeds. It provides examples of calculation of parasite drag at transonic speeds as a result of step behind the slat on the wing of commercial airplane.

  12. 78 FR 71989 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-02

    ... of the forward engine mount, and could result in separation of an engine under power from the... in separation of an engine under power from the airplane, and consequent loss of control of the... engine mount, and could result in separation of an engine under power from the airplane and consequent...

  13. Flight Research using Radio-controlled Small Airplanes 5 -6 ...

    Indian Academy of Sciences (India)

    To generate aerodynamic data on small airplane configurations, six-component strain gauge balances of appropriate ratings have been developed for use in the 2.75x4.25 m low speed wind. tunneJl at IISc (Figures 12-14). The balances are suitable for full scale tests of the above research airplanes with the power plant.

  14. 77 FR 42956 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-07-23

    ... (CRJ) aeroplanes, resulting in loss of the associated hydraulic system and high-energy impact damage to... DHC-8-100, DHC-8-200, and DHC-8-300 series airplanes. This AD was prompted by reports of hydraulic..., which could result in loss of the number 2 hydraulic system and damage to airplane structures, and could...

  15. 78 FR 17290 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-21

    ... the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW... Airworthiness Limitations section of the Instructions for Continued Airworthiness. Comments We gave the public... to exclude airplanes with Airline Information Management System (AIMS) V1 installed from the...

  16. 78 FR 30243 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes

    Science.gov (United States)

    2013-05-22

    ... Directives; Eclipse Aerospace, Inc. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... all Eclipse Aerospace, Inc. Model EA500 airplanes equipped with Avio, Avio with ETT, or Avio NG 1.0... identified in this proposed AD, contact Eclipse Aerospace, Inc. 26 East Palatine Road, Wheeling, Illinois...

  17. 76 FR 55614 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2011-09-08

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Pacific Aerospace... (AD) for Pacific Aerospace Limited Models FU24-954 and FU24A-954 airplanes modified with an unapproved... INFORMATION CONTACT: Karl Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room...

  18. 14 CFR 91.605 - Transport category civil airplane weight limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Transport category civil airplane weight... civil airplane weight limitations. (a) No person may take off any transport category airplane (other than a turbine-engine-powered airplane certificated after September 30, 1958) unless— (1) The takeoff...

  19. 14 CFR 121.1105 - Aging airplane inspections and records reviews.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records... Improvements § 121.1105 Aging airplane inspections and records reviews. (a) Applicability. This section applies to all airplanes operated by a certificate holder under this part, except for those airplanes...

  20. 14 CFR Appendix D to Part 135 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ... airplanes with non-mechanical control systems (fly-by-wire) the “and” applies. In airplanes with split... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification D.... D Appendix D to Part 135—Airplane Flight Recorder Specification Parameters Range Accuracy sensor...

  1. 14 CFR Appendix D to Part 125 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ... airplanes with non-mechanical control systems (fly-by-wire) the “and” applies. In airplanes with split... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification D... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD...

  2. Class 2 design update for the family of commuter airplanes

    Science.gov (United States)

    Creighton, Thomas R.; Hendrich, Louis J.

    1987-01-01

    This is the final report of seven on the design of a family of commuter airplanes. This design effort was performed in fulfillment of NASA/USRA grant NGT-8001. Its contents are as follows: (1) the class 1 baseline designs for the commuter airplane family; (2) a study of takeoff weight penalties imposed on the commuter family due to implementing commonality objectives; (3) component structural designs common to the commuter family; (4) details of the acquisition and operating economics of the commuter family, i.e., savings due to production commonality and handling qualities commonality are determined; (5) discussion of the selection of an advanced turboprop propulsion system for the family of commuter airplanes, and (6) a proposed design for an SSSA controller design to achieve similar handling for all airplanes. Final class 2 commuter airplane designs are also presented.

  3. 75 FR 46868 - Airworthiness Directives; The Boeing Company Model 747 Airplanes and Model 767 Airplanes Equipped...

    Science.gov (United States)

    2010-08-04

    .... ADDRESSES: You may send comments by any of the following methods: Federal eRulemaking Portal: Go to http... Global Supply Systems (Global) requests that we revise AD 2007-12- 07, Amendment 39-15085 (72 FR 31174... airplanes. Global explains that GE has two engine software revisions to the EEC bleed scheduling, which...

  4. 14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...

    Science.gov (United States)

    2010-01-01

    ... in the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are... the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Large transport category airplanes: Turbine...

  5. Flying Airplanes: Realizing Circadian Effects (FARCE)

    OpenAIRE

    David L. Dickinson; Todd McElroy

    2009-01-01

    People differ in their diurnal (time-of-day) preferences—some are morning-types and others are evening-types. These differences are explored in a unique experiment design in which subjects are randomly assigned to produce paper airplanes at either 8:00 a.m. or 10:00 p.m. Our results show that evening-types at their more optimal time-of-day (10:00 p.m.) produce planes that fly statistically significantly farther than those produced by morning-types at their more optimal time-of-day (8:00 a.m.)...

  6. Image mosaicking from aerial unmanned airplane

    Science.gov (United States)

    Wang, Tao; Gong, Jianhua

    2008-10-01

    In this article, the SIFT method is employed to combine a lot of images together from aerial unmanned airplane, without any control points. And the image number of this method is smaller than that of the triangulation. SIFT feature, which has shown great success in computer vision, is introduced into image registration in remote sensing. We extract distinctive invariant features from images that can be used to perform reliable matching between different views of an object or scene. The features are invariant to image scale and rotation, they are well localized in both the spatial and frequency domains, reducing the probability of disruption by occlusion, clutter, or noise.

  7. Practical method for balancing airplane moments

    Science.gov (United States)

    Hamburger, H

    1924-01-01

    The present contribution is the sequel to a paper written by Messrs. R. Fuchs, L. Hopf, and H. Hamburger, and proposes to show that the methods therein contained can be practically utilized in computations. Furthermore, the calculations leading up to the diagram of moments for three airplanes, whose performance in war service gave reason for complaint, are analyzed. Finally, it is shown what conclusions can be drawn from the diagram of moments with regard to the defects in these planes and what steps may be taken to remedy them.

  8. Simulation of Dynamics of a Flexible Miniature Airplane

    Science.gov (United States)

    Waszak, Martin R.

    2005-01-01

    A short report discusses selected aspects of the development of the University of Florida micro-aerial vehicle (UFMAV) basically, a miniature airplane that has a flexible wing and is representative of a new class of airplanes that would operate autonomously or under remote control and be used for surveillance and/or scientific observation. The flexibility of the wing is to be optimized such that passive deformation of the wing in the presence of aerodynamic disturbances would reduce the overall response of the airplane to disturbances, thereby rendering the airplane more stable as an observation platform. The aspect of the development emphasized in the report is that of computational simulation of dynamics of the UFMAV in flight, for the purpose of generating mathematical models for use in designing control systems for the airplane. The simulations are performed by use of data from a wind-tunnel test of the airplane in combination with commercial software, in which are codified a standard set of equations of motion of an airplane, and a set of mathematical routines to compute trim conditions and extract linear state space models.

  9. Fuzzy Logic Decoupled Longitudinal Control for General Aviation Airplanes

    Science.gov (United States)

    Duerksen, Noel

    1996-01-01

    It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control difference airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control throttle position and another to control elevator position. These two controllers were used to control flight path angle and airspeed for both a piston powered single engine airplane simulation and a business jet simulation. Overspeed protection and stall protection were incorporated in the form of expert systems supervisors. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic longitudinal controller could be successfully used on two general aviation aircraft types that have very difference characteristics. These controllers worked for both airplanes over their entire flight envelopes including configuration changes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle lever travel, etc.). The controllers also handled configuration changes without mode switching or knowledge of the current configuration. This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.

  10. Fuzzy Logic Decoupled Lateral Control for General Aviation Airplanes

    Science.gov (United States)

    Duerksen, Noel

    1997-01-01

    It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control different airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control aileron or roll spoiler position. This controller was used to control bank angle for both a piston powered single engine aileron equipped airplane simulation and a business jet simulation which used spoilers for primary roll control. Overspeed, stall and overbank protection were incorporated in the form of expert systems supervisors and weighted fuzzy rules. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic lateral controller could be successfully used on two general aviation aircraft types that have very different characteristics. These controllers worked for both airplanes over their entire flight envelopes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle ]ever travel, etc.). This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.

  11. Rapid Airplane Parametric Input Design(RAPID)

    Science.gov (United States)

    Smith, Robert E.; Bloor, Malcolm I. G.; Wilson, Michael J.; Thomas, Almuttil M.

    2004-01-01

    An efficient methodology is presented for defining a class of airplane configurations. Inclusive in this definition are surface grids, volume grids, and grid sensitivity. A small set of design parameters and grid control parameters govern the process. The general airplane configuration has wing, fuselage, vertical tail, horizontal tail, and canard components. The wing, tail, and canard components are manifested by solving a fourth-order partial differential equation subject to Dirichlet and Neumann boundary conditions. The design variables are incorporated into the boundary conditions, and the solution is expressed as a Fourier series. The fuselage has circular cross section, and the radius is an algebraic function of four design parameters and an independent computational variable. Volume grids are obtained through an application of the Control Point Form method. Grid sensitivity is obtained by applying the automatic differentiation precompiler ADIFOR to software for the grid generation. The computed surface grids, volume grids, and sensitivity derivatives are suitable for a wide range of Computational Fluid Dynamics simulation and configuration optimizations.

  12. 78 FR 44871 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-07-25

    ...;Prices of new books are listed in the first FEDERAL REGISTER issue of each #0;week. #0; #0; #0; #0;#0... in Renton, Washington, on July 11, 2013. Jeffrey E. Duven, Acting Manager, Transport Airplane...

  13. 76 FR 4216 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-01-25

    ..., call 816-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small... found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  14. 75 FR 89 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-01-04

    ... after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer...

  15. 75 FR 52480 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-08-26

    ... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer...

  16. 75 FR 30272 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-06-01

    ...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  17. 76 FR 30295 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-05-25

    ... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  18. 75 FR 13239 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-03-19

    ... receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  19. 75 FR 71536 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-11-24

    ... of this material at the FAA, call 816-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  20. Reversible cerebral vasoconstriction syndrome precipitated by airplane descent: Case report.

    Science.gov (United States)

    Hiraga, Akiyuki; Aotsuka, Yuya; Koide, Kyosuke; Kuwabara, Satoshi

    2017-10-01

    Background Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by segmental vasospasm. Vasoactive agents and childbirth have been reported as precipitating factors for RCVS; however, RCVS induced by altitude change or air travel has rarely been reported. Case We present a case of a 74-year-old woman who presented with thunderclap headache during airplane descent. Magnetic resonance angiography demonstrated segmental vasoconstriction that improved 9 days after onset. Conclusion These findings indicate that airplane descent may be a trigger of RCVS. The time course of headache in the present case was similar to that of prolonged headache attributed to airplane travel, indicating that RCVS during air travel may have previously been overlooked and that some headache attributed to airplane travel cases may represent a milder form of RCVS.

  1. Childhood headache attributed to airplane travel: a case report.

    Science.gov (United States)

    Rogers, Kirsty; Rafiq, Nadia; Prabhakar, Prab; Ahmed, Mas

    2015-05-01

    Headache attributed to airplane flights is a rare form of headache disorder. This case study describes an 11-year-old girl with recurrent, severe, frontal headaches occurring during airplane travel. The episodes were associated with dizziness and facial pallor but no additional symptoms and showed spontaneous resolution on landing. Blood tests and imaging revealed no abnormalities. The present case fulfils the criteria for airplane headache recently included in the revised edition of the International Classification of Headache Disorders (ICHD-III Beta). Only a few cases of airplane headache have been reported in children. To our knowledge, this is the fourth case. We review the current literature on this rare syndrome and discuss various proposed pathophysiological mechanisms. © The Author(s) 2014.

  2. Airport Pavement Design For The Boeing 777 Airplane

    Science.gov (United States)

    1995-10-22

    The purpose of this advisory circular is to provide thickness design standards : for pavements intended to serve the Boeing 777 airplane. A new method of design : based on layered elastic analysis has been developed to calculate design : thickness fo...

  3. A Study of Transport Airplane Crash-Resistant Fuel Systems

    National Research Council Canada - National Science Library

    Robertson, S

    2002-01-01

    ...), of transport airplane crash-resistant fuel system (CRFS). The report covers the historical studies related to aircraft crash fires and fuel containment concepts undertaken by the FAA, NASA, and the U.S...

  4. 78 FR 72554 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2013-12-03

    ... Aerospace Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all Gulfstream Aerospace Corporation Model... General Electric (GE) Aviation service information identified in this AD, contact Gulfstream Aerospace...

  5. Instrument Rating Practical Test Standards for Airplane, Helicopter, Airship

    Science.gov (United States)

    1994-10-01

    The Instrument Rating Practical Test Standards (PTS) book has : been published by the Federal Aviation Administration (FAA) to : establish the standards for the instrument rating practical test for : airplanes, helicopters, and airships. FAA inspecto...

  6. The Response of an Airplane to Random Atmospheric Disturbances

    National Research Council Canada - National Science Library

    Diederich, Franklin

    1957-01-01

    The local velocity fluctuations acting on an airplane flying through atmospheric turbulence are functions of time defined only in a statistical sense and, hence, constitute a stochastic or random process...

  7. Exposure to flame retardant chemicals on commercial airplanes.

    Science.gov (United States)

    Allen, Joseph G; Stapleton, Heather M; Vallarino, Jose; McNeely, Eileen; McClean, Michael D; Harrad, Stuart J; Rauert, Cassandra B; Spengler, John D

    2013-02-16

    Flame retardant chemicals are used in materials on airplanes to slow the propagation of fire. These chemicals migrate from their source products and can be found in the dust of airplanes, creating the potential for exposure. To characterize exposure to flame retardant chemicals in airplane dust, we collected dust samples from locations inside 19 commercial airplanes parked overnight at airport gates. In addition, hand-wipe samples were also collected from 9 flight attendants and 1 passenger who had just taken a cross-country (USA) flight. The samples were analyzed for a suite of flame retardant chemicals. To identify the possible sources for the brominated flame retardants, we used a portable XRF analyzer to quantify bromine concentrations in materials inside the airplanes. A wide range of flame retardant compounds were detected in 100% of the dust samples collected from airplanes, including BDEs 47, 99, 153, 183 and 209, tris(1,3-dichloro-isopropyl)phosphate (TDCPP), hexabromocyclododecane (HBCD) and bis-(2-ethylhexyl)-tetrabromo-phthalate (TBPH). Airplane dust contained elevated concentrations of BDE 209 (GM: 500 ug/g; range: 2,600 ug/g) relative to other indoor environments, such as residential and commercial buildings, and the hands of participants after a cross-country flight contained elevated BDE 209 concentrations relative to the general population. TDCPP, a known carcinogen that was removed from use in children's pajamas in the 1970's although still used today in other consumer products, was detected on 100% of airplanes in concentrations similar to those found in residential and commercial locations. This study adds to the limited body of knowledge regarding exposure to flame retardants on commercial aircraft, an environment long hypothesized to be at risk for maximum exposures due to strict flame retardant standards for aircraft materials. Our findings indicate that flame retardants are widely used in many airplane components and all airplane types, as

  8. Airplane headache: a further case report of a young man.

    Science.gov (United States)

    Domitrz, Izabela

    2010-12-01

    Headache with normal examinations and imaging, occurring during an airplane flight has been rarely reported. We present a young patient with a new type of headache that appeared during flights: take-off and landing of a plane and was not associated with other conditions. This airplane headache is rather rare in population and the pathophysiology of this type is not clear. Secondary causes must be ruled out before the diagnosis of a primary headache is made.

  9. The Airplane as an Open-Source Invention

    OpenAIRE

    Peter B. Meyer

    2013-01-01

    Airplanes were invented after decades of experimentation in many countries through a process we can call open-source innovation. Experimenters, inventors, and writers contributed to the airplane’s development by sharing information in publications, in clubs, by writing letters and by visiting. The hundreds of aeronautical patents before 1900 were treated like publications, not like claims to intellectual property. Inventors of modern airplanes copied earlier designs, analogously to advances i...

  10. STUDY OF THE AIR FLOWS AROUND AN AIRPLANE

    Directory of Open Access Journals (Sweden)

    Diaconescu Olivian

    2013-06-01

    Full Text Available This material presents a stage of the designing of an airplane capable to work with low capacity engines of 2.5 and 4 cmc namely the simulation of the air flow around the fuselage and the wings. The study proves the correctness of the choice made in the wing’s positioning and of the horizontal stabilizer of the airplane’s axis,for the chosen airplane type namely acrobat.

  11. DETERMINATION OF PARASITE DRAG FOR COMMERCIAL AIRPLANE AT TRANSONIC SPEEDS

    Directory of Open Access Journals (Sweden)

    V. I. Shevyakov

    2014-01-01

    Full Text Available It considers the task of determination of parasite drag for subsonic commercial airplane on the base of theoretical calculation procedures. It contains the procedure for clarification of empirical approach to calculation of parasite drag at high speeds. It provides examples of calculation of parasite drag at transonic speeds as a result of step behind the slat on the wing of commercial airplane.

  12. A family of supersonic airplanes: Technical and economic feasibility

    Science.gov (United States)

    Neumann, F. D.; Whitten, J. W.

    1980-01-01

    To improve the prospects for success in the market place, the family approach is essential to the design of future supersonic airplanes. The evolution from a basic supersonic airplane to a family could follow historic patterns, with one exception: substantial changes in passenger carrying capacity will be difficult by the conventional fuselage "doughnut" approach so successfully used on the cylindrical fuselage of subsonic airplanes. The primary reasons for this difference include the requirement for highly integrated "area ruled" configurations, to give the desired high supersonic aerodynamic efficiency, and other physical limitations such as takeoff and landing rotation. A concept for a supersonic airplane family that could effectively solve the variable range and passenger capacity problem provides for modification of the fuselage cross section that makes it possible to build a family of three airplanes with four, five, and six abreast passenger seating. This is done by replacing or modifying portions of the fuselage. All airplanes share the same wing, engines, and major subsystems. Only small sections of the fuselage would be different, and aerodynamic efficiency need not be compromised.

  13. Simple Electromagnetic Modeling of Small Airplanes: Neural Network Approach

    Directory of Open Access Journals (Sweden)

    P. Tobola

    2009-04-01

    Full Text Available The paper deals with the development of simple electromagnetic models of small airplanes, which can contain composite materials in their construction. Electromagnetic waves can penetrate through the surface of the aircraft due to the specific electromagnetic properties of the composite materials, which can increase the intensity of fields inside the airplane and can negatively influence the functionality of the sensitive avionics. The airplane is simulated by two parallel dielectric layers (the left-hand side wall and the right-hand side wall of the airplane. The layers are put into a rectangular metallic waveguide terminated by the absorber in order to simulate the illumination of the airplane by the external wave (both of the harmonic nature and pulse one. Thanks to the simplicity of the model, the parametric analysis can be performed, and the results can be used in order to train an artificial neural network. The trained networks excel in further reduction of CPU-time demands of an airplane modeling.

  14. Revolution in airplane construction? Grob G110: The first modern fiber glass composition airplane shortly before its maiden flight

    Science.gov (United States)

    Dorpinghaus, R.

    1982-01-01

    A single engine two passenger airplane, constructed completely from fiber reinforced plastic materials is introduced. The cockpit, controls, wing profile, and landing gear are discussed. Development of the airframe is also presented.

  15. 77 FR 60005 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2012-10-01

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. It also withdraws the notice entitled, ``Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues'', published on...

  16. 76 FR 75735 - Certification of Part 23 Turbofan- and Turbojet-Powered Airplanes and Miscellaneous Amendments

    Science.gov (United States)

    2011-12-02

    ... conventional horizontal tails and those that use trimmable elevators. Airplanes that experienced upset.... Diamond asked why this rule did not apply to turboprops and piston-powered airplanes. Parking brakes and...

  17. Design definition study of a lift/cruise fan technology V/STOL airplane: Summary

    Science.gov (United States)

    Zabinsky, J. M.; Higgins, H. C.

    1975-01-01

    A two-engine three-fan V/STOL airplane was designed to fulfill naval operational requirements. A multimission airplane was developed from study of specific point designs. Based on the multimission concept, airplanes were designed to demonstrate and develop the technology and operational procedures for this class of aircraft. Use of interconnected variable pitch fans led to a good balance between high thrust with responsive control and efficient thrust at cruise speeds. The airplanes and their characteristics are presented.

  18. Headache attributed to airplane travel ('airplane headache'): clinical profile based on a large case series.

    Science.gov (United States)

    Mainardi, F; Lisotto, C; Maggioni, F; Zanchin, G

    2012-06-01

    The 'headache attributed to airplane travel', also named 'airplane headache' (AH), is a recently described headache disorder that appears exclusively in relation to airplane flights, in particular during the landing phase. Based on the stereotypical nature of the attacks in all reported cases, we proposed provisional diagnostic criteria for AH in a previously published paper. Up to now 37 cases have been described in the literature. After our paper was disseminated via the Internet, we received several email messages from subjects around the world who had experienced such a peculiar headache. Their cooperation, by completing a structured questionnaire and allowing the direct observation of three subjects, enabled us to carry out a study on a total of 75 patients suffering from AH. Our survey confirmed the stereotypical nature of the attacks, in particular with regard to the short duration of the pain (lasting less than 30 minutes in up to 95% of the cases), the clear relationship with the landing phase, the unilateral pain, the male preponderance, and the absence of accompanying signs and/or symptoms. It is conceivable to consider barotrauma as one of the main mechanisms involved in the pathophysiology of AH. The observation that the pain appears inconstantly in the majority of cases, without any evident disorder affecting the paranasal sinuses, could be consistent with a multimodal pathogenesis underlying this condition, possibly resulting in the interaction between anatomic, environmental and temporary concurrent factors. This is by far the largest AH case series ever reported in the literature. The diagnostic criteria that we previously proposed proved to be valid when applied to a large number of patients suffering from this condition. We support its recognition as a new form of headache, to be included in the forthcoming update of the International Headache Society Classification, within '10. Headache attributed to disorder of homoeostasis'. Its formal

  19. 75 FR 61655 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-10-06

    ..., Inc. Model PA-28-161 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for all Piper Aircraft, Inc. (Piper) Model PA-28-161 airplanes equipped with.... Piper Model PA-28-161 airplanes modified by STC No. SA03303AT have a similar unsafe design feature that...

  20. 76 FR 29176 - Airworthiness Directives; Piper Aircraft, Inc. PA-23, PA-31, and PA-42 Airplanes

    Science.gov (United States)

    2011-05-20

    ..., Inc. PA-23, PA-31, and PA-42 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... (AD) that applies to Piper Aircraft, Inc. PA-23, PA-31, and PA-42 airplanes. The existing AD currently... certain Piper Aircraft, Inc. PA-23, PA-31, and PA-42 airplanes. That AD established life limits for safety...

  1. 75 FR 43878 - Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN...

    Science.gov (United States)

    2010-07-27

    ... Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G Airplanes.... Since that NPRM was issued, we have determined that Model FAN JET FALCON SERIES C, D, E, F, and G..., Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G airplanes, and Model MYSTERE-FALCON 20-C5...

  2. 75 FR 79952 - Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN...

    Science.gov (United States)

    2010-12-21

    ... Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN JET FALCON.... (1) DASSAULT AVIATION Model Falcon 10 airplanes, Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E... airplanes Inspection threshold (whichever occurs later) Inspection interval Model FAN JET FALCON, FAN JET...

  3. 14 CFR 125.175 - Protection of other airplane components against fire.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Protection of other airplane components... CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD... Requirements § 125.175 Protection of other airplane components against fire. (a) Except as provided in...

  4. 14 CFR 121.277 - Protection of other airplane components against fire.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Protection of other airplane components....277 Protection of other airplane components against fire. (a) Except as provided in paragraph (b) of this section, all airplane surfaces aft of the nacelles in the area of one nacelle diameter on both...

  5. 14 CFR 135.397 - Small transport category airplane performance operating limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Small transport category airplane... PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations § 135.397 Small transport category airplane performance operating limitations. (a) No person may operate a reciprocating engine...

  6. 14 CFR 135.399 - Small nontransport category airplane performance operating limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Small nontransport category airplane... PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations § 135.399 Small nontransport category airplane performance operating limitations. (a) No person may operate a reciprocating engine or...

  7. 14 CFR 121.411 - Qualifications: Check airmen (airplane) and check airmen (simulator).

    Science.gov (United States)

    2010-01-01

    ... following— (1) Fly at least two flight segments as a required crewmember for the type airplane involved... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Qualifications: Check airmen (airplane) and... § 121.411 Qualifications: Check airmen (airplane) and check airmen (simulator). (a) For the purposes of...

  8. 14 CFR 121.643 - Fuel supply: Nonturbine and turbo-propeller-powered airplanes: Supplemental operations.

    Science.gov (United States)

    2010-01-01

    ... operating nontransport category airplanes type certificated after December 31, 1964, to fly for 30 minutes...-powered airplanes: Supplemental operations. 121.643 Section 121.643 Aeronautics and Space FEDERAL AVIATION... Flight Release Rules § 121.643 Fuel supply: Nonturbine and turbo-propeller-powered airplanes...

  9. 77 FR 59873 - Airworthiness Directives; Cessna Aircraft Company Airplanes; Initial Regulatory Flexibility Analysis

    Science.gov (United States)

    2012-10-01

    ... should be flown into known icing. However, the original certification basis for these airplanes did not... equipment these airplanes may be qualified to fly into known light or moderate icing condition under 14 CFR... significant alternative to prohibiting the affected airplanes from flying into known icing conditions. And...

  10. 14 CFR 125.375 - Fuel supply: Nonturbine and turbopropeller-powered airplanes.

    Science.gov (United States)

    2010-01-01

    ...) Thereafter, to fly for 45 minutes at normal crusing fuel consumption. (b) If the airplane is released for any...-powered airplanes. 125.375 Section 125.375 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... AND OPERATIONS CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE...

  11. 14 CFR Appendix B to Part 121 - Airplane Flight Recorder Specification

    Science.gov (United States)

    2010-01-01

    ...-mechanical control systems (fly-by-wire) the “and” applies. In airplanes with split surfaces, suitable... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification B... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Pt. 121, App. B Appendix B to Part 121—Airplane...

  12. 76 FR 65103 - Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Aircraft Electronic...

    Science.gov (United States)

    2011-10-20

    .... This airplane will have novel or unusual design features associated with the architecture and... interior design configuration in the Gulfstream Model GIV-X passenger airplane. The Gulfstream Model GIV-X is a two-engine jet transport airplane with a maximum takeoff weight of 47,600 pounds and an interior...

  13. Patterns of measles transmission among airplane travelers.

    Science.gov (United States)

    Edelson, Paul J

    2012-09-01

    With advanced air handling systems on modern aircraft and the high level of measles immunity in many countries, measles infection in air travelers may be considered a low-risk event. However, introduction of measles into countries where transmission has been controlled or eliminated can have substantial consequences both for the use of public health resources and for those still susceptible. In an effort to balance the relatively low likelihood of disease transmission among largely immune travelers and the risk to the public health of the occurrence of secondary cases resulting from importations, criteria in the United States for contact investigations for measles exposures consider contacts to be those passengers who are seated within 2 rows of the index case. However, recent work has shown that cabin air flow may not be as reliable a barrier to the spread of measles virus as previously believed. Along with these new studies, several reports have described measles developing after travel in passengers seated some distance from the index case. To understand better the potential for measles virus to spread on an airplane, reports of apparent secondary cases occurring in co-travelers of passengers with infectious cases of measles were reviewed. Medline™ was searched for articles in all languages from 1946 to week 1 of March 2012, using the search terms "measles [human] or rubeola" and ("aircraft" or "airplane" or "aeroplane" or "aviation" or "travel" or "traveler" or "traveller"); 45 citations were returned. Embase™ was searched from 1988 to week 11 2012, using the same search strategy; 95 citations were returned. Papers were included in this review if they reported secondary cases of measles occurring in persons traveling on an airplane on which a person or persons with measles also flew, and which included the seating location of both the index case(s) and the secondary case(s) on the plane. Nine reports, including 13 index cases and 23 apparent secondary cases

  14. Solar Airplanes and Regenerative Fuel Cells

    Science.gov (United States)

    Bents, David J.

    2007-01-01

    A solar electric aircraft with the potential to "fly forever" has captured NASA's interest, and the concept for such an aircraft was pursued under Aeronautics Environmental Research Aircraft and Sensor Technology (ERAST) project. Feasibility of this aircraft happens to depend on the successful development of solar power technologies critical to NASA's Exploration Initiatives; hence, there was widespread interest throughout NASA to bring these technologies to a flight demonstration. The most critical is an energy storage system to sustain mission power during night periods. For the solar airplane, whose flight capability is already limited by the diffuse nature of solar flux and subject to latitude and time of year constraints, the feasibility of long endurance flight depends on a storage density figure of merit better than 400-600 watt-hr per kilogram. This figure of merit is beyond the capability of present day storage technologies (other than nuclear) but may be achievable in the hydrogen-oxygen regenerative fuel cell (RFC). This potential has led NASA to undertake the practical development of a hydrogen-oxygen regenerative fuel cell, initially as solar energy storage for a high altitude UAV science platform but eventually to serve as the primary power source for NASAs lunar base and other planet surface installations. Potentially the highest storage capacity and lowest weight of any non-nuclear device, a flight-weight RFC aboard a solar-electric aircraft that is flown continuously through several successive day-night cycles will provide the most convincing demonstration that this technology's widespread potential has been realized. In 1998 NASA began development of a closed cycle hydrogen oxygen PEM RFC under the Aeronautics Environmental Research Aircraft and Sensor Technology (ERAST) project and continued its development, originally for a solar electric airplane flight, through FY2005 under the Low Emissions Alternative Power (LEAP) project. Construction of

  15. Planetary Airplane Extraction System Development and Subscale Testing

    Science.gov (United States)

    Teter, John E., Jr.

    2006-01-01

    The Aerial Regional-scale Environmental Survey (ARES) project will employ an airplane as the science platform from which to collect science data in the previously inaccessible, thin atmosphere of Mars. In order for the airplane to arrive safely in the Martian atmosphere, a number of sequences must occur. A critical element in the entry sequence at Mars is an extraction maneuver to separate the airplane quickly (in less than a second) from its protective backshell to reduce the possibility of re-contact, potentially leading to mission failure. This paper describes the development, testing, and lessons learned from building a 1/3 scale model of this airplane extraction system. This design, based on the successful Mars Exploration Rover (MER) extraction mechanism, employs a series of trucks rolling along tracks located on the surface of the central parachute can. Numerous tests using high speed video were conducted at the Langley Research Center to validate this concept. One area of concern was that that although the airplane released cleanly, a pitching moment could be introduced. While targeted for a Mars mission, this concept will enable environmental surveys by aircraft in other planetary bodies with a sensible atmosphere such as Venus or Saturn's moon, Titan.

  16. Three Cases of Spine Fractures after an Airplane Crash

    Science.gov (United States)

    Lee, Han Joo; Moon, Bong Ju; Pennant, William A.; Shin, Dong Ah; Kim, Keung Nyun; Yoon, Do Heum

    2015-01-01

    While injuries to the spine after an airplane crash are not rare, most crashes result in fatal injuries. As such, few studies exist that reported on spine fractures sustained during airplane accidents. In this report, we demonstrate three cases of spine fractures due to crash landing of a commercial airplane. Three passengers perished from injuries after the crash landing, yet most of the passengers and crew on board survived, with injuries ranging from minor to severe. Through evaluating our three spine fracture patients, it was determined that compression fracture of the spine was the primary injury related to the airplane accident. The first patient was a 20-year-old female who sustained a T6-8 compression fracture without neurologic deterioration. The second patient was a 33-year-old female with an L2 compression fracture, and the last patient was a 49-year-old male patient with a T8 compression fracture. All three patients were managed conservatively and required spinal orthotics. During the crash, each of these patients were subjected to direct, downward high gravity z-axis (Gz) force, which gave rise to load on the spine vertically, thereby causing compression fracture. Therefore, new safety methods should be developed to prevent excessive Gz force during airplane crash landings. PMID:27169094

  17. 78 FR 76731 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Rechargeable Lithium...

    Science.gov (United States)

    2013-12-19

    ... series airplanes have fly-by-wire controls, fully software-configurable avionics, and fiber-optic... Series Airplanes; Rechargeable Lithium Ion Batteries and Battery Systems AGENCY: Federal Aviation... Boeing Model 777- 200, -300, and -300ER series airplanes. These airplanes as modified by the ARINC...

  18. 78 FR 76249 - Special Conditions: Airbus, Model A350-900 Series Airplane; Flight Envelope Protection: Normal...

    Science.gov (United States)

    2013-12-17

    .... As with the previous fly-by-wire airplanes, the FAA has no regulatory or safety reason to inhibit the...-0905; Notice No. 25-13-28-SC] Special Conditions: Airbus, Model A350-900 Series Airplane; Flight... Airbus Model A350- 900 series airplanes. These airplanes will have a novel or unusual design feature(s...

  19. Solar Airplane Concept Developed for Venus Exploration

    Science.gov (United States)

    Landis, Geoffrey A.

    2004-01-01

    An airplane is the ideal vehicle for gathering atmospheric data over a wide range of locations and altitudes, while having the freedom to maneuver to regions of scientific interest. Solar energy is available in abundance on Venus. Venus has an exoatmospheric solar flux of 2600 W/m2, compared with Earth's 1370 W/m2. The solar intensity is 20 to 50 percent of the exoatmospheric intensity at the bottom of the cloud layer, and it increases to nearly 95 percent of the exoatmospheric intensity at 65 km. At these altitudes, the temperature of the atmosphere is moderate, in the range of 0 to 100 degrees Celsius, depending on the altitude. A Venus exploration aircraft, sized to fit in a small aeroshell for a "Discovery" class scientific mission, has been designed and analyzed at the NASA Glenn Research Center. For an exploratory aircraft to remain continually illuminated by sunlight, it would have to be capable of sustained flight at or above the wind speed, about 95 m/sec at the cloud-top level. The analysis concluded that, at typical flight altitudes above the cloud layer (65 to 75 km above the surface), a small aircraft powered by solar energy could fly continuously in the atmosphere of Venus. At this altitude, the atmospheric pressure is similar to pressure at terrestrial flight altitudes.

  20. Advances in Thrust-Based Emergency Control of an Airplane

    Science.gov (United States)

    Creech, Gray; Burken, John J.; Burcham, Bill

    2003-01-01

    Engineers at NASA's Dryden Flight Research Center have received a patent on an emergency flight-control method implemented by a propulsion-controlled aircraft (PCA) system. Utilizing the preexisting auto-throttle and engine-pressure-ratio trim controls of the airplane, the PCA system provides pitch and roll control for landing an airplane safely without using aerodynamic control surfaces that have ceased to function because of a primary-flight-control-system failure. The installation of the PCA does not entail any changes in pre-existing engine hardware or software. [Aspects of the method and system at previous stages of development were reported in Thrust-Control System for Emergency Control of an Airplane (DRC-96-07), NASA Tech Briefs, Vol. 25, No. 3 (March 2001), page 68 and Emergency Landing Using Thrust Control and Shift of Weight (DRC-96-55), NASA Tech Briefs, Vol. 26, No. 5 (May 2002), page 58.]. Aircraft flight-control systems are designed with extensive redundancy to ensure low probabilities of failure. During recent years, however, several airplanes have exhibited major flight-control-system failures, leaving engine thrust as the last mode of flight control. In some of these emergency situations, engine thrusts were successfully modulated by the pilots to maintain flight paths or pitch angles, but in other situations, lateral control was also needed. In the majority of such control-system failures, crashes resulted and over 1,200 people died. The challenge lay in creating a means of sufficient degree of thrust-modulation control to safely fly and land a stricken airplane. A thrust-modulation control system designed for this purpose was flight-tested in a PCA an MD-11 airplane. The results of the flight test showed that without any operational control surfaces, a pilot can land a crippled airplane (U.S. Patent 5,330,131). The installation of the original PCA system entailed modifications not only of the flight-control computer (FCC) of the airplane but

  1. 78 FR 59798 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-30

    .... American and Delta confirmed through a review of the applicable airplane illustrated parts catalogs that... type certificate (STC) ST00830SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0... that STC ST00830SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0...

  2. 77 FR 52212 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-29

    ... analysis of the predicted crack growth rate is used to establish the repetitive intervals of 1,400 flight cycles. These repetitive intervals must include the variability of crack growth rate between airplanes... 1 through 90 inclusive: Within 500 flight cycles after May 24, 2004 (the effective date of AD 2004...

  3. 77 FR 35304 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-06-13

    ... available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace...) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  4. 77 FR 36129 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-06-18

    ...) airplanes. This AD was prompted by reports of a bleed air leak from the high pressure ducts which was not... events reported where a bleed air leak from the high pressure ducts was not immediately detected by the... cracked or ruptured duct, the duct shroud may not channel sufficient bleed air to the sensing loop...

  5. 77 FR 45981 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-08-02

    ... failure of the screw cap or end cap of hydraulic accumulators on other airplane models, resulting in high-energy impact damage to adjacent systems and structure. This proposed AD would require inspecting for a part number and replacing the affected parking brake hydraulic accumulator, and relocating the parking...

  6. 78 FR 49240 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-08-13

    ...-400 series airplanes. This proposed AD was prompted by a report that a batch of main landing gear (MLG... personal information you provide. We will also post a report summarizing each substantive verbal contact we... installed backwards. This condition, if not corrected, could result in increased actuator friction, which...

  7. 78 FR 63855 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-10-25

    ... and 747-8 series airplanes. This AD requires a detailed inspection of the power control actuator (PCA... stabilizer rear spar and the elevator front spar and between certain stabilizer stations for defects and... from the left inboard elevator during a functional check of the ram air turbine system, and a...

  8. 77 FR 52201 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-29

    ...) software in the airplane information management system (AIMS) hardware. We are issuing this AD to prevent T... Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code 78, Exhaust. (e... information management system hardware, in accordance with the Accomplishment Instructions of Boeing Special...

  9. 77 FR 10403 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-22

    ...-0145; Directorate Identifier 2011-NM-066-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 767 airplanes. The existing AD currently requires revising the Airworthiness... of certain doors and flaps was done based on their fatigue-critical nature. This proposed AD would...

  10. 77 FR 55681 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-11

    ... prompted by reports of stress corrosion cracking in the chord segments made from 7079 aluminum in the... repairing discrepancies if necessary. We are issuing this AD to detect and correct stress corrosion and/or... Work hours Average labor Parts Cost per product registered Fleet cost rate per hour airplanes...

  11. 77 FR 23166 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-18

    ... FURTHER INFORMATION CONTACT: Serj Harutunian, Aerospace Engineer, Propulsion Branch, ANM-140L, FAA, Los... regulations, the service history of airplanes subject to those regulations, and existing maintenance practices... indication to the flight crew that the tank is empty. The flight engineer must manually shut off each pump...

  12. 77 FR 37831 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-06-25

    ... Revise Repetitive Interval CAL, Qantas Airways Ltd (Qantas), and Boeing asked that we revise the... discrepancies. Qantas and Boeing asked that the repetitive interval be changed to 7,500 flight hours or 36 months, whichever occurs first. Qantas and Boeing stated that, for low-utilization airplanes, it would...

  13. 77 FR 47568 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-08-09

    ... for the three-light strobe system of certain Model G58 airplanes. The wire used is a smaller gauge... possible failure of the aircraft's strobe light system. The failure of the wiring for the aircraft's strobe...,410 $56,400 light strobe system. hour = $1,360. According to the manufacturer, some of the costs of...

  14. 76 FR 68666 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-11-07

    ... assemblies in the ECS with burned BMS 8-39 polyurethane foam insulation on two Model 767-200 series airplanes... in the ECS with burned BMS 8- 39 polyurethane foam insulation. These ADs also resulted from reports... effective date of the AD. In developing the compliance time for this action, we considered the degree of...

  15. 77 FR 12757 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-03-02

    ...: [email protected] ; or Internet: http://www.hawkerbeechcraft.com/customer_support/technical_and_field_support/ . You may review copies of the referenced service information at the FAA, Small Airplane...: http://www.hawkerbeechcraft.com/customer_support/technical_and_field_support/ . You may review copies...

  16. 77 FR 65642 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-30

    ... the fuel cross-feel valve is powered by the battery direct current (DC) bus. AAL added that the wing fuel pump relays and fuel cross-feed valve are both supplied by DC bus power on Model 737 airplanes... CMR would demonstrate proof of analysis, and provide a best-fit solution for that analysis; i.e., an...

  17. 77 FR 16191 - Airworthiness Directives; Bombardier Inc. Airplanes

    Science.gov (United States)

    2012-03-20

    ...-400 series airplanes. This proposed AD was prompted by reports that the automatic de-icing mode became..., contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5...). Investigation has revealed that the failures were attributed to overstressed capacitors installed in the circuit...

  18. 77 FR 56989 - Airworthiness Directives; Bombardier Inc. Airplanes

    Science.gov (United States)

    2012-09-17

    ...-8-400 series airplanes. This AD was prompted by reports that the automatic de-icing mode became... were attributed to overstressed capacitors installed in the circuit board of the TMU ``Module 300'' power supply. The failure of the capacitors leads to failure of the TMU ``Module 300'' power supply and...

  19. 77 FR 74579 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2012-12-17

    ... hydraulic valves in the flap hydraulic control module (FHCM) during the system power-on self test (SPOST... FSECU executing its SPOST before 115VAC and hydraulic power are available during the airplane power-on... whether hydraulic and electrical power have been supplied to the system articles under test; the test...

  20. 77 FR 29855 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2012-05-21

    ... data and determined that air safety and the public interest require adopting the AD as proposed. Costs... other factors, a fire and consequent damage to the airplane. DATES: This AD becomes effective June 25... INFORMATION CONTACT: Shahram Daneshmandi, Aerospace Engineer, International Branch, ANM-116, Transport...

  1. 78 FR 4038 - Critical Parts for Airplane Propellers

    Science.gov (United States)

    2013-01-18

    ... because it updates the existing regulations for airplane propellers. I. Overview of Final Rule Part 35.... General Overview of Comments The FAA received three comments. One was from a repair station, Sensenich...,555.60 per respondent which will occur on the effective date of the rule. The total cost for the three...

  2. The Paper Airplane Challenge: A Market Economy Simulation. Lesson Plan.

    Science.gov (United States)

    Owens, Kimberly

    This lesson plan features a classroom simulation that helps students understand the characteristics of a market economic system. The lesson plan states a purpose; cites student objectives; suggests a time duration; lists materials needed; and details a step-by-step teaching procedure. The "Paper Airplane Challenge" handout is attached. (BT)

  3. Diagnosis and management of headache attributed to airplane travel.

    Science.gov (United States)

    Mainardi, Federico; Maggioni, Ferdinando; Lisotto, Carlo; Zanchin, Giorgio

    2013-03-01

    The headache attributed to airplane travel, also named "airplane headache", is characterized by the sudden onset of a severe head pain exclusively in relation to airplane flights, mainly during the landing phase. Secondary causes, such as upper respiratory tract infections or acute sinusitis, must be ruled out. Although its cause is not thoroughly understood, sinus barotrauma should be reasonably involved in the pathophysiological mechanisms. Furthermore, in the current International Classification of Headache Disorders, rapid descent from high altitude is not considered as a possible cause of headache, although the onset of such pain in airplane travellers or aviators has been well known since the beginning of the aviation era. On the basis of a survey we conducted with the courteous cooperation of people who had experienced this type of headache, we proposed diagnostic criteria to be added to the forthcoming revision of the International Classification of Headache Disorders. Their formal validation would favour further studies aimed at improving knowledge of the pathophysiological mechanisms involved and at implementing preventative measures.

  4. 78 FR 47233 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-05

    ... information identified in this proposed AD, contact Live TV, 8900 Hangar Boulevard, Orlando, FL 32827... inspections of the radome assembly of various Model 737 series airplanes that had in-flight entertainment systems installed using certain STC issued to Live TV. The STC numbers are STC ST00284BO, http://rgl.faa...

  5. 77 FR 45979 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-08-02

    ..., without change, to http://www.regulations.gov , including any personal information you provide. We will... between the national Government and the States, or on the distribution of power and responsibilities among..., unless already done. (g) Inspection (1) As of the effective date of this AD, if the age of the airplane...

  6. 77 FR 3 - Airworthiness Directives; Dassault Aviation Airplanes

    Science.gov (United States)

    2012-01-03

    ... wiring in the RAT generator, which could result in degraded direct current power to essential airplane... degraded direct current power which is distributed to essential aeroplane systems and therefore aeroplane... to prevent loose internal wiring in the RAT generator, which could result in degraded direct current...

  7. 78 FR 49982 - Airworthiness Directives; Saab AB, Saab Aerosystems Airplanes

    Science.gov (United States)

    2013-08-16

    ...)(ii) of this AD, as applicable. (i) Single System: Pull the compressor control circuit breaker... airplane logbook referring to this AD as the reason for deactivation. (ii) Dual System: Pull the compressor... compressor motor is installed, an inspection to determine the age of a certain compressor hour meter since...

  8. 78 FR 37448 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2013-06-21

    ... engineering solution such as anti- lock brakes, which could prevent brake lock-up and avoid the adverse condition. It would address maximum braking, no matter what the cause. The anti-lock system would include... airplanes. This AD was prompted by reports that during maximum braking, if the brakes lock up and a skid...

  9. 77 FR 40828 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-07-11

    ...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model DC-10-10 and MD-10-10F airplanes. This proposed AD was prompted by a report that the safe life limit on...-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: Deliver to Mail address above...

  10. 78 FR 21576 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-11

    ...-0300; Directorate Identifier 2011-NM-163-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 757.... For service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention...

  11. 78 FR 46538 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0666; Directorate Identifier 2013-NM-060-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  12. 78 FR 21569 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-11

    ...-0299; Directorate Identifier 2012-NM-072-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  13. 78 FR 3363 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-01-16

    ...-1318; Directorate Identifier 2012-NM-104-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  14. 78 FR 27315 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-10

    ...-0369; Directorate Identifier 2012-NM-128-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 757... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  15. 77 FR 5996 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-07

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... control system (ECS) wrapped with Boeing Material Specification (BMS) 8-39 or Aeronautical Materials...

  16. 76 FR 77937 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-15

    ...-1320; Directorate Identifier 2011-NM-208-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 777..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65...

  17. 78 FR 27310 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-05-10

    ...-0368; Directorate Identifier 2012-NM-058-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  18. 78 FR 52838 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... October 1, 2013. ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  19. 78 FR 55662 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-09-11

    ...-0706; Directorate Identifier 2013-NM-067-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain the Boeing Company Model DC-9... Federal holidays. For service information identified in this AD, contact Boeing Commercial Airplanes...

  20. 78 FR 73457 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-12-06

    ...-1023; Directorate Identifier 2013-NM-042-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... Boeing Company Model 747-100, 747-200B, 747-200F series airplanes. AD 84-19-01 requires repetitive... Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing...

  1. 78 FR 52875 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-08-27

    ...-0701; Directorate Identifier 2013-NM-073-AD] RIN 2120-AA64 Airworthiness Directives; the Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all the Boeing Company Model 727.... For service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention...

  2. 77 FR 21422 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747- 200B, 747-200C, 747-200F, 747-300, 747-400..., September 21, 2007). ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  3. 78 FR 26720 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-05-08

    ...-0366; Directorate Identifier 2011-NM-024-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 747-100, 747- 100B, 747-100B SUD, 747-200B, 747-200C, 747-300, 747-400, 747-400D... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  4. 77 FR 12170 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-02-29

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... the AD as of April 4, 2012. ADDRESSES: For service information identified in this AD, contact Boeing... 98124-2207; telephone 206- 544-5000, extension 1; fax 206-766-5680; email [email protected]boeing.com...

  5. 78 FR 24037 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-24

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... AD until Boeing has released service information. (Specific modifications and solutions were not...

  6. 78 FR 21571 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-11

    ...-0304; Directorate Identifier 2013-NM-005-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  7. 77 FR 57541 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ...-0938; Directorate Identifier 2011-NM-271-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC...

  8. 77 FR 57539 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ...-0935; Directorate Identifier 2011-NM-256-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  9. 77 FR 731 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-01-06

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT..., 2012. ADDRESSES: For Boeing service information identified in this AD, contact Boeing Commercial...; telephone (206) 544-5000, extension 1; fax (206) 766-5680; email [email protected]boeing.com ; Internet https://www...

  10. 77 FR 57529 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ...-0937; Directorate Identifier 2011-NM-270-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P...

  11. 77 FR 24831 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-26

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing... directive (AD): 2012-08-17 The Boeing Company: Amendment 39-17034; Docket No. FAA- 2012-0110; Directorate...

  12. 78 FR 73744 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-09

    ...-0268; Directorate Identifier 2011-NM-129-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... proposed rulemaking (SNPRM) for all The Boeing Company Model 737-600, -700, - 700C, -800, -900 and -900ER... information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services...

  13. 78 FR 15281 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-03-11

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all The Boeing... April 15, 2013. ADDRESSES: For service information identified in this AD, contact Boeing Commercial...

  14. 77 FR 55159 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-07

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 737-700... p.m., Monday through Friday, except Federal holidays. For Boeing service information identified in...

  15. 78 FR 72836 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-12-04

    ...-0977; Directorate Identifier 2013-NM-190-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 717-200... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood...

  16. 77 FR 46340 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-03

    ...-0803; Directorate Identifier 2011-NM-214-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to supersede an existing airworthiness directive (AD) that applies to all The Boeing... holidays. For service information identified in this AD, contact Boeing Commercial Airplanes, Attention...

  17. 78 FR 58982 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-09-25

    ...-0796; Directorate Identifier 2013-NM-111-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to supersede airworthiness directive (AD) 2013-07- 07, which applies to all The Boeing... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management...

  18. 78 FR 40050 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0540; Directorate Identifier 2012-NM-185-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Boeing Company Model 747-100, 747- 100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400... Federal holidays. For service information identified in this AD, contact Boeing Commercial Airplanes...

  19. 77 FR 63266 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-16

    ...-1073; Directorate Identifier 2012-NM-078-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 767... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes...

  20. 77 FR 47329 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-08

    ...-0805; Directorate Identifier 2012-NM-117-AD] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... propose to rescind an existing airworthiness directive (AD) that applies to certain The Boeing Company... service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data...

  1. Airplane radiation dose decrease during a strong Forbush decrease

    Czech Academy of Sciences Publication Activity Database

    Spurný, František; Kudela, K.; Dachev, T.

    2004-01-01

    Roč. 2, S05001 (2004), s. 1-4 ISSN 1542-7390 Grant - others:EC project(XE) FIGM-CT2000-00068 Institutional research plan: CEZ:AV0Z1048901 Keywords : airplane dose * Forbush decrease * cosmic rays Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders

  2. 76 FR 81879 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-29

    ... chord, which could result in loss of structural integrity of the airplane. Since these actions impose an... public the chance to comment on these proposed changes. DATES: We must receive comments on this... this AD to detect and correct such cracks, which could result in loss of structural integrity of the...

  3. 78 FR 45898 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-07-30

    ... airplanes of total loss of boost pump pressure of the fuel feed system, followed by loss of fuel system... correct failure of the engine fuel suction feed of the fuel system, which, in the event of total loss of... in the previous SNPRM, we are reopening the comment period to allow the public the chance to comment...

  4. 77 FR 10352 - Airworthiness Directives; Various Transport Category Airplanes

    Science.gov (United States)

    2012-02-22

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2010... Airworthiness Directives; Various Transport Category Airplanes AGENCY: Federal Aviation Administration (FAA... doors for proper operation, fit, sealing, and latching for the containment of possible trash fires. (2...

  5. 75 FR 61657 - Airworthiness Directives; Transport Category Airplanes

    Science.gov (United States)

    2010-10-06

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2010... Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice... operation, fit, sealing, and latching for the containment of possible trash fires. (2) Correct all defects...

  6. Small-scale fixed wing airplane software verification flight test

    Science.gov (United States)

    Miller, Natasha R.

    The increased demand for micro Unmanned Air Vehicles (UAV) driven by military requirements, commercial use, and academia is creating a need for the ability to quickly and accurately conduct low Reynolds Number aircraft design. There exist several open source software programs that are free or inexpensive that can be used for large scale aircraft design, but few software programs target the realm of low Reynolds Number flight. XFLR5 is an open source, free to download, software program that attempts to take into consideration viscous effects that occur at low Reynolds Number in airfoil design, 3D wing design, and 3D airplane design. An off the shelf, remote control airplane was used as a test bed to model in XFLR5 and then compared to flight test collected data. Flight test focused on the stability modes of the 3D plane, specifically the phugoid mode. Design and execution of the flight tests were accomplished for the RC airplane using methodology from full scale military airplane test procedures. Results from flight test were not conclusive in determining the accuracy of the XFLR5 software program. There were several sources of uncertainty that did not allow for a full analysis of the flight test results. An off the shelf drone autopilot was used as a data collection device for flight testing. The precision and accuracy of the autopilot is unknown. Potential future work should investigate flight test methods for small scale UAV flight.

  7. 78 FR 6200 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-01-30

    ... FR 11416, February 27, 2012) and replace the words ``other products of this same type design'' in the paragraph ``FAA's Determination,'' with the words ``the Boeing 737 Next Generation (737NG) airplane prior to... significant economic impact, positive or negative, on a substantial number of small entities under the...

  8. 77 FR 50407 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-08-21

    ... requires repetitive inspections to detect cracking of the lower corners of the door frame and cross beam of... cracks are found in the number 5 cross beam, and corrective actions if necessary. For certain airplanes... inspections to detect cracking of the lower corners of the door frame and cross beam of the forward cargo door...

  9. 78 FR 18257 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-03-26

    ... loss of the associated hydraulic system and high-energy impact damage to adjacent systems and structure... necessary to protect the hydraulic system and airplane structure from possible damage by any faulty screw... brake accumulator screw cap or end cap resulting in loss of the number 2 hydraulic system and damage to...

  10. 77 FR 16193 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-03-20

    ... loss of the associated hydraulic system and high-energy impact damage to adjacent systems and structure... that resulted in loss of use of that hydraulic system and in high-energy impact damage to adjacent... (Regional Jet Series 900) airplanes. This proposed AD was prompted by reports of failures of a hydraulic...

  11. 77 FR 65617 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-10-30

    ... cap of hydraulic accumulators on other airplane models, resulting in high-energy impact damage to... the associated hydraulic system and high-energy impact damage to adjacent systems and structure. To... by cases of on-ground hydraulic accumulator/screw cap/end cap failure, resulting in high-energy...

  12. 77 FR 20511 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-05

    ... any cold-bonding methods that would be applicable to the composite TR inner wall on the affected airplanes. Current SRM repair methods for composite structure involve either autoclave or vacuum bag/heat... Parker, Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office (ACO...

  13. 78 FR 49221 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2013-08-13

    ... this AD, inspect the wing lift strut forks for cracks using magnetic particle procedures, such as those... Aircraft, Inc. Model J-2 airplanes equipped with wing lift struts. AD 99-26-19 currently requires repetitively inspecting the wing lift struts for dents and corrosion; repetitively inspecting the wing lift...

  14. 78 FR 9781 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2013-02-12

    ...-044-AD; Amendment 39-17335; AD 2013-03-01] RIN 2120-AA64 Airworthiness Directives; Pacific Aerospace... Aerospace Limited Models FU24-954 and FU24A-954 airplanes. This AD results from mandatory continuing.... For service information identified in this AD, contact Pacific Aerospace Limited, Hamilton Airport...

  15. 78 FR 49908 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes

    Science.gov (United States)

    2013-08-16

    ...-007-AD; Amendment 39-17542; AD 2013-16-04] RIN 2120-AA64 Airworthiness Directives; Eclipse Aerospace... adopting a new airworthiness directive (AD) for all Eclipse Aerospace, Inc. Model EA500 airplanes equipped... service information identified in this AD, contact Eclipse Aerospace, Inc., 26 East Palatine Road...

  16. 77 FR 54787 - Airworthiness Directives; M7 Aerospace LLC Airplanes

    Science.gov (United States)

    2012-09-06

    ...-17177; AD 2012-18-01] RIN 2120-AA64 Airworthiness Directives; M7 Aerospace LLC Airplanes AGENCY: Federal... new airworthiness directive (AD) for all M7 Aerospace LLC Models SA226-AT, SA226-T, SA226-T(B), SA226... information identified in this AD, contact M7 Aerospace LP, 10823 NE Entrance Road, San Antonio, Texas 78216...

  17. 77 FR 49394 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-08-16

    ... exist or develop on other products of the same type design. Costs of Compliance Based on the service...-400, -401, and -402 airplanes. This proposed AD was prompted by reports of an in-service incident where the propeller de-icing system became unavailable due to burnt/ chafed wires within the alternating...

  18. 78 FR 22172 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-15

    ... revealed defective, misapplied, or missing secondary fuel vapor barriers on the center fuel tank. This AD..., and/or structural cracking of the center fuel tank. Model 757 airplanes have not had a history of... repairs: On-Condition Costs Cost per Action Labor cost Parts cost product Apply secondary fuel barrier...

  19. 77 FR 42455 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-07-19

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2012... those already placed on an airplane's wing root, is not at a high risk of an inadvertent in-flight... U.S. Action Labor cost Parts cost product operators Relocate the magneto switch from the 3.5 work...

  20. Aerobasics–An Introduction to Aeronautics-Airplane Propulsion

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 14; Issue 7. Aerobasics – An Introduction to Aeronautics - Airplane Propulsion. S P Govinda Raju. Series Article Volume 14 Issue 7 July 2009 pp 650-666. Fulltext. Click here to view fulltext PDF. Permanent link:

  1. Blended Buffet-Load-Alleviation System for Fighter Airplane

    Science.gov (United States)

    Moses, Robert W.

    2005-01-01

    The capability of modern fighter airplanes to sustain flight at high angles of attack and/or moderate angles of sideslip often results in immersion of part of such an airplane in unsteady, separated, vortical flow emanating from its forebody or wings. The flows from these surfaces become turbulent and separated during flight under these conditions. These flows contain significant levels of energy over a frequency band coincident with that of low-order structural vibration modes of wings, fins, and control surfaces. The unsteady pressures applied to these lifting surfaces as a result of the turbulent flows are commonly denoted buffet loads, and the resulting vibrations of the affected structures are known as buffeting. Prolonged exposure to buffet loads has resulted in fatigue of structures on several airplanes. Damage to airplanes caused by buffeting has led to redesigns of airplane structures and increased support costs for the United States Air Force and Navy as well as the armed forces of other countries. Time spent inspecting, repairing, and replacing structures adversely affects availability of aircraft for missions. A blend of rudder-control and piezoelectric- actuator engineering concepts was selected as a basis for the design of a vertical-tail buffet-load-alleviation system for the F/A-18 airplane. In this system, the rudder actuator is used to control the response of the first tail vibrational mode (bending at a frequency near 15 Hz), while directional patch piezoelectric actuators are used to control the second tail vibrational mode (tip torsion at a frequency near 45 Hz). This blend of two types of actuator utilizes the most effective features of each. An analytical model of the aeroservoelastic behavior of the airplane equipped with this system was validated by good agreement with measured results from a full-scale ground test, flight-test measurement of buffet response, and an in-flight commanded rudder frequency sweep. The overall performance of the

  2. State of the art of piloted electric airplanes, NASA's centennial challenge data and fundamental design implications

    Science.gov (United States)

    Costello, Lori Anne

    The purpose of this study was to determine the current state of the electric airplane as primarily defined by results from NASA's Green Flight Challenge Competition. New equations must be derived in order to determine the endurance and range for electric airplanes since the standard equations depend upon weight change over a flight and the weight of an electric airplane does not change. These new equations could then be solved for the optimal velocity and altitude which were the two driving factors that could change range and endurance for a given airplane configuration. The best velocity for range and endurance is not a function of energy storage or weight change thus the results turn out to be very similar to internal combustion engine airplanes, however, the optimal altitude for the best range and endurance equates to flying as high as reasonably possible. From examining the Green Flight Challenge data of the two fully electric airplanes, the analysis suggests that the electric propulsion system is not the only measure, given today's battery technology, that helps create a viable electric airplane solution. Aerodynamic efficiency becomes very important in order to reduce the required amount of energy. Airplanes that are aerodynamically inefficient make bad electric airplanes because the energy density of batteries is still low and the energy available to carry on board is limited. The more energy wasted on drag, the less the range and endurance of the airplane can be since the addition of more batteries may not be an option.

  3. 78 FR 63847 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Airplane Electronic System Security...

    Science.gov (United States)

    2013-10-25

    ... operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is designed for..., Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-1298...

  4. 78 FR 63845 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Isolation or Airplane Electronic...

    Science.gov (United States)

    2013-10-25

    ... corporate flight, fractional, charter, and private owner operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and... Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue...

  5. 77 FR 24759 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2012-04-25

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for Wednesday...

  6. 76 FR 60115 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2011-09-28

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for Wednesday...

  7. 76 FR 14115 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2011-03-15

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting... ] (ARAC) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for...

  8. 75 FR 10551 - Aviation Rulemaking Advisory Committee Meeting on Transport Airplane and Engine Issues

    Science.gov (United States)

    2010-03-08

    ... Engine Issues AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of public meeting...) to discuss transport airplane and engine (TAE) issues. DATES: The meeting is scheduled for Wednesday...

  9. Can triptans safely be used for airplane headache?

    Science.gov (United States)

    Ipekdal, H Ilker; Karadaş, Ömer; Öz, Oğuzhan; Ulaş, Ümit H

    2011-12-01

    A few cases of airplane headache (AH) have been reported in the literature. Treatment strategies of AHs are also controversial. We followed-up five patients with AH. They were symptom-free during the daytime. Their physical, neurological, and ear-nose-throat examinations were all normal. Blood chemistries, cerebral magnetic resonance imaging, cerebral magnetic resonance imaging angiography, and paranasal sinus tomography studies of the patients were also normal. We preferred triptans because of the possible effect on the mechanism of AH. Patients were recommended to use single-dose of their drugs half an hour prior to flights. All of the patients had a good response to single dose triptan treatment and became headache-free during flights. This is the first study which puts forward the usefulness of the triptans as a safe treatment choice for airplane AH.

  10. The Factors that Determine the Minimum Speed of an Airplane

    Science.gov (United States)

    Norton, F H

    1921-01-01

    The author argues that because of a general misunderstanding of the principles of flight at low speed, there are a large number of airplanes that could be made to fly several miles per hour slower than at present by making slight modifications. In order to show how greatly the wing section affects the minimum speed, curves are plotted against various loadings. The disposition of wings on the airplane slightly affects the lift coefficient, and a few such cases are discussed. Another factor that has an effect on minimum speed is the extra lift exerted by the slip stream on the wings. Also discussed are procedures to be followed by the pilot, especially with regard to stick movements during low speed flight. Also covered are stalling, yaw, rolling moments, lateral control, and the effectiveness of ailerons and rudders.

  11. 76 FR 50111 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-08-12

    ..., 2000, 3000, and 4000 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of.... Applicability (c) This AD applies to Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 airplanes...

  12. 76 FR 50115 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

    Science.gov (United States)

    2011-08-12

    .... Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes AGENCY: Federal Aviation Administration (FAA.... Applicability (c) This AD applies to Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 airplanes...

  13. Performance of two load-limiting subfloor concepts in full-scale general aviation airplane crash tests

    Science.gov (United States)

    Carden, H. D.

    1984-01-01

    Three six-place, low wing, twin-engine general aviation airplane test specimens were crash tested at the langley Impact Dynamics research Facility under controlled free-flight conditions. One structurally unmodified airplane was the baseline airplane specimen for the test series. The other airplanes were structurally modified to incorporate load-limiting (energy-absorbing) subfloor concepts into the structure for full scale crash test evaluation and comparison to the unmodified airplane test results. Typically, the lowest floor accelerations and anthropomorphic dummy occupant responses, and the least seat crushing of standard and load-limiting seats, occurred in the modified load-limiting subfloor airplanes wherein the greatest structural crushing of the subfloor took place. The better performing of the two load-limiting subfloor concepts reduced the peak airplane floor accelerations at the pilot and four seat/occupant locations to -25 to -30 g's as compared to approximately -50 to -55 g's acceleration magnitude for the unmodified airplane structure.

  14. Technical Preparation of the Airplane "Spirit of St. Louis."

    Science.gov (United States)

    Hall, Donald A

    1927-01-01

    Given here is a brief history of the design and construction of the "Spirit of St. Lewis", the airplane that Charles Lindbergh flew solo across the Atlantic. Although the plan was to modify a standard model Ryan M-2, it was quickly determined that modification was less practical than redesign. Colonel Lindbergh's active participation in the design of the aircraft is noted. Given here are the general dimensions, specifications, weight characteristics, and man hours required to build the aircraft.

  15. Light airplane crash tests at three flight-path angles

    Science.gov (United States)

    Castle, C. B.; Alfaro-Bou, E.

    1978-01-01

    Three similar twin engine general aviation airplane specimens were crash tested at Langley impact dynamics research facility at 27 m/sec and at flight-path angles of -15 deg, -30 deg, and -45 deg. Other flight parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  16. Light airplane crash tests at three roll angles

    Science.gov (United States)

    Castle, C. B.; Alfaro-Bou, E.

    1979-01-01

    Three similar twin engine general aviation airplanes were crash tested at the Langley impact dynamics research facility at 27 m/sec and at nominal roll angles of 0 deg, -15 deg, and -30 deg. Other flight parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  17. Light Airplane Crash Test at Three Pitch Angles

    Science.gov (United States)

    Vaughan, Victor L., Jr.; Alfaro-Bou, Emilio

    1979-01-01

    Three similar twin-engine general-aviation airplane specimens were crash tested at the Langley Impact Dynamics Research Facility at 27 m/sec, a flight-path angle of -15deg, and pithch angles of -15deg, 0deg, and 15deg. Other crash parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  18. Light airplane crash tests at three pitch angles

    Science.gov (United States)

    Vaughan, V. L., Jr.; Alfaro-Bou, E.

    1979-01-01

    Three similar twin-engine general aviation airplane specimens were crash tested at an impact dynamics research facility at 27 m/sec, a flight path angle of -15 deg, and pitch angles of -15 deg, 0 deg, and 15 deg. Other crash parameters were held constant. The test facility, instrumentation, test specimens, and test method are briefly described. Structural damage and accelerometer data for each of the three impact conditions are presented and discussed.

  19. Remarks on building of low-powered airplanes

    Science.gov (United States)

    Langsdorff, Werner V

    1924-01-01

    If the low-powered airplane is to be used advantageously by private individuals, the most important consideration is a smaller fuel consumption and, hence, a lower engine power. From experiments with gliders, it appears entirely possible, by utilizing ascending winds (on the weather side of mountains and those generated by the heat of the sun) and by employing engine flight intermittently, as required to fly long distances over land.

  20. Headache associated with airplane travel: a rare entity.

    Science.gov (United States)

    Cherian, Ajith; Mathew, Mini; Iype, Thomas; Sandeep, P; Jabeen, Afshan; Ayyappan, K

    2013-01-01

    Airplane travel headache is rare and has recently been described as a new form of headache associated with a specific situation. Of the 1,208 patients with primary headaches attending a tertiary care neurology hospital, two (0.16%) patients satisfied the criteria for headache related to airplane travel. Both the patients fulfilled the proposed diagnostic criteria for airplane travel headache. This unique headache had a mean duration of 24 minutes, localized to the medial supraorbital region described as having an intense jabbing or stabbing character that occurred exclusively and maximally during aircraft landing or take-off, following which pain intensity subsided . This rare headache felt on aircraft descent is probably due to the squeeze effect on the frontal sinus wall, when air trapped inside it contracts producing a negative pressure leading to mucosal edema, transudation and intense pain. Use of nasal decongestants either alone or in combination with naproxen sodium prior to ascent and descent abated the headache episodes. Awareness about this unique entity is essential to provide proper treatment and avoid patient suffering.

  1. Numerical simulation of RCS for carrier electronic warfare airplanes

    Directory of Open Access Journals (Sweden)

    Yue Kuizhi

    2015-04-01

    Full Text Available This paper studies the radar cross section (RCS of carrier electronic warfare airplanes. Under the typical naval operations section, the mathematical model of the radar wave’s pitch angle incidence range analysis is established. Based on the CATIA software, considering dynamic deflections of duck wing leading edge flaps, flaperons, horizontal tail, and rudder, as well as aircraft with air-to-air missile, anti-radiation missile, electronic jamming pod, and other weapons, the 3D models of carrier electronic warfare airplanes Model A and Model B with weapons were established. Based on the physical optics method and the equivalent electromagnetic flow method, by the use of the RCSAnsys software, the characteristics of carrier electronic warfare airplanes’ RCS under steady and dynamic flights were simulated under the UHF, X, and S radar bands. This paper researches the detection probability of aircraft by radars under the condition of electronic warfare, and completes the mathematical statistical analysis of the simulation results. The results show that: The Model A of carrier electronic warfare airplane is better than Model B on stealth performance and on discover probability by radar detection effectively.

  2. A Software Defined Radio Based Airplane Communication Navigation Simulation System

    Science.gov (United States)

    He, L.; Zhong, H. T.; Song, D.

    2018-01-01

    Radio communication and navigation system plays important role in ensuring the safety of civil airplane in flight. Function and performance should be tested before these systems are installed on-board. Conventionally, a set of transmitter and receiver are needed for each system, thus all the equipment occupy a lot of space and are high cost. In this paper, software defined radio technology is applied to design a common hardware communication and navigation ground simulation system, which can host multiple airplane systems with different operating frequency, such as HF, VHF, VOR, ILS, ADF, etc. We use a broadband analog frontend hardware platform, universal software radio peripheral (USRP), to transmit/receive signal of different frequency band. Software is compiled by LabVIEW on computer, which interfaces with USRP through Ethernet, and is responsible for communication and navigation signal processing and system control. An integrated testing system is established to perform functional test and performance verification of the simulation signal, which demonstrate the feasibility of our design. The system is a low-cost and common hardware platform for multiple airplane systems, which provide helpful reference for integrated avionics design.

  3. 75 FR 76647 - Special Conditions: Boeing Model 747-8 Airplanes, Systems and Data Networks Security-Isolation or...

    Science.gov (United States)

    2010-12-09

    ... Model 747-8 Airplanes, Systems and Data Networks Security--Isolation or Protection From Unauthorized... information services, than previous 747-8 airplane models. This may allow the exploitation of network security... passenger domain computer systems to the airplane critical systems and data networks. The applicable...

  4. 78 FR 5146 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Dive Speed Definition With Speed...

    Science.gov (United States)

    2013-01-24

    ... the airplane's flight control laws. The airplane's high-speed protection system limits nose-down pilot... regulatory adequacy under Sec. 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues... attitudes; or that the airplane is protected by the flight control laws from getting into non-symmetric...

  5. 78 FR 31836 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Dive Speed Definition With Speed...

    Science.gov (United States)

    2013-05-28

    ... the airplane's flight control laws. The airplane's high-speed protection system limits nose-down pilot... regulatory adequacy under Sec. 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues... attitudes; or that the airplane is protected by the flight control laws from getting into non-symmetric...

  6. 78 FR 63902 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: Normal...

    Science.gov (United States)

    2013-10-25

    ... primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Joe Jacobsen, FAA, Airplane and Flight Crew Interface Branch, Transport Airplane Directorate, Aircraft... displacement maneuvers because of the following: Knowledge that the limit system will protect the structure...

  7. 76 FR 54923 - Special Conditions: Dassault Falcon Model 900 and 900EX Airplanes; Interaction of Systems and...

    Science.gov (United States)

    2011-09-06

    ... 900 and 900EX airplanes, as modified by API, will incorporate the following novel or unusual design... 900 and 900EX airplanes. These airplanes, as modified by Aviation Partners Incorporated (API), will have a novel or unusual design feature associated with the interaction of systems and structures...

  8. 78 FR 11978 - Airworthiness Directives; Reims Aviation S.A. Airplanes

    Science.gov (United States)

    2013-02-21

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  9. 77 FR 72252 - Airworthiness Directives; Reims Aviation S.A. Airplanes

    Science.gov (United States)

    2012-12-05

    .... FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate...; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  10. 75 FR 65052 - Consensus Standards, Standard Practice for Maintenance of Airplane Electrical Wiring Systems

    Science.gov (United States)

    2010-10-21

    ... Practice for Maintenance of Airplane Electrical Wiring Systems AGENCY: Federal Aviation Administration, DOT...'s F2799-09 Standard Practice for Maintenance of Airplane Electrical Wiring Systems (Standard Practice) as an acceptable means of compliance to 14 CFR part 23 sections concerning electrical wiring...

  11. 75 FR 65051 - Consensus Standards, Standard Practice for Inspection of Airplane Electrical Wiring Systems

    Science.gov (United States)

    2010-10-21

    ... Practice for Inspection of Airplane Electrical Wiring Systems AGENCY: Federal Aviation Administration, DOT...'s F2696-08 Standard Practice for Inspection of Airplane Electrical Wiring Systems (Standard Practice) as an acceptable means of compliance to 14 CFR part 23 sections concerning electrical wiring systems...

  12. 14 CFR 121.203 - Nontransport category airplanes: Landing limitations: Destination airport.

    Science.gov (United States)

    2010-01-01

    ... limitations: Destination airport. 121.203 Section 121.203 Aeronautics and Space FEDERAL AVIATION... airport. (a) No person operating a nontransport category airplane may take off that airplane at a weight... destination airport; and (2) Is greater than the weight allowable if the landing is to be made on the runway...

  13. 75 FR 68688 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2010-11-09

    ... airplanes. This AD requires changing the lower fixed leading edge panel assemblies immediately outboard of... have drain holes and unsealed panel assemblies in the fixed leading edge adjacent to the inboard end of... Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle...

  14. 75 FR 31329 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2010-06-03

    ... airplanes. This proposed AD would require changing the lower fixed leading edge panel assemblies immediately... service that have drain holes and unsealed panel assemblies in the fixed leading edge adjacent to the... Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207...

  15. 78 FR 76248 - Special Conditions: Airbus, Model A350-900 Series Airplane; Side Stick Controller

    Science.gov (United States)

    2013-12-17

    ..., Model A350-900 Series Airplane; Side Stick Controller AGENCY: Federal Aviation Administration (FAA), DOT... associated with side stick controllers which require limited pilot force because they are operated by only... A350-900 series airplane is equipped with two side stick controllers instead of the conventional...

  16. RESULTS OF AIRPLANE TU-204-300 OPERATED BY "VLADIVOSTOK AVIA" COMPANY FUEL FLOW MONITIRING

    Directory of Open Access Journals (Sweden)

    G. E. Maslennikova

    2014-01-01

    Full Text Available This article describes the results obtained from continuous monitoring of fuel flow on the airplanes Tu-204-300, operated by the aircompany "Vladivostok Avia". The reasons for the change in the cost of each copy of airplane and changes in fuel characteristics due to pilots manner of flying.

  17. 14 CFR Appendix E to Part 91 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications E... Appendix E to Part 91—Airplane Flight Recorder Specifications Parameters Range Installed system 1 minimum... instruments (except altimeters) of acceptable quality to fly the aircraft the recording system excluding these...

  18. A pilot's opinion of the F-8 digital fly-by-wire airplane

    Science.gov (United States)

    Krier, G. E.

    1976-01-01

    The handling qualities of the F-8 digital fly by wire airplane are evaluated by using the Cooper-Harper rating scale. The reasons for the ratings are given, as well as a short description of the flying tasks. It was concluded that the handling qualities of the airplane were good in most situations, although occasional ratings of unsatisfactory were given.

  19. 14 CFR Appendix B to Part 135 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications B.... B Appendix B to Part 135—Airplane Flight Recorder Specifications Parameters Range Installed system 1... aircraft instruments (except altimeters) of acceptable quality to fly the aircraft the recording system...

  20. 14 CFR 121.505 - Flight time limitations: Two pilot crews: airplanes.

    Science.gov (United States)

    2010-01-01

    ...: airplanes. 121.505 Section 121.505 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... Operations § 121.505 Flight time limitations: Two pilot crews: airplanes. (a) If a certificate holder conducting supplemental operations schedules a pilot to fly more than eight hours during any 24 consecutive...

  1. 77 FR 58761 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2012-09-24

    ... Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) all Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 airplanes, and... adding the following new AD: 2012-19-06 Empresa Brasileira de Aeronautica S.A. (EMBRAER): Amendment 39...

  2. 76 FR 64785 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes

    Science.gov (United States)

    2011-10-19

    ... Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes AGENCY: Federal Aviation... new AD: 2011-21-15 Empresa Brasileira de Aeronautica S.A. (EMBRAER): Amendment 39-16838. Docket No... Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135ER, -135KE, -135KL, and -135LR airplanes...

  3. 76 FR 28 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-01-03

    ... fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. Since these... allow the public the chance to comment on these proposed changes. DATES: We must receive comments on... and consequent loss of the airplane. Compliance (f) Comply with this AD within the compliance times...

  4. 76 FR 30043 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-05-24

    ... proposing this AD to reduce the chance of unintended lateral oscillations near touchdown, which could result in loss of lateral control of the airplane, and consequent airplane damage or injury to flight crew... landing. Unintended lateral oscillations near touchdown could result in loss of lateral control of the...

  5. 76 FR 18664 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2011-04-05

    ... explosion and consequent loss of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on... consequent loss of the airplane. Compliance (f) Comply with this AD within the compliance times specified...

  6. 77 FR 48473 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-08-14

    ... and consequent loss of the airplane. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on... with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane...

  7. 76 FR 10529 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From...

    Science.gov (United States)

    2011-02-25

    ... architecture and connectivity capabilities of the airplane's computer systems and networks, which may allow... will be an all-new, two- engine jet transport airplane with an executive cabin interior. The maximum... will incorporate the following novel or unusual design features: Digital systems architecture composed...

  8. 78 FR 11609 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Landing Pitchover Condition

    Science.gov (United States)

    2013-02-19

    ... aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is designed for 8... Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind...

  9. 77 FR 58970 - Special Conditions: Embraer S.A. Model EMB-550 Airplanes, Sudden Engine Stoppage

    Science.gov (United States)

    2012-09-25

    ... primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Cindy Ashforth, FAA, International Branch, ANM-116, Transport Airplane Directorate, Aircraft... conditions numbers 3 and 4, below) could allow some deformation in the engine-supporting structure (ultimate...

  10. 75 FR 12468 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes

    Science.gov (United States)

    2010-03-16

    ... Aerospace, Inc. Model 11E Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for all Quartz Mountain Aerospace, Inc. Model 11E airplanes. This proposed AD would... 5 p.m., Monday through Friday, except Federal holidays. Quartz Mountain Aerospace, Inc. is in...

  11. 75 FR 30282 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes

    Science.gov (United States)

    2010-06-01

    ... Aerospace, Inc. Model 11E Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Quartz Mountain Aerospace, Inc. Model 11E airplanes. This AD requires you to clean and lubricate the... publications listed in this AD. ADDRESSES: Quartz Mountain Aerospace, Inc. is in liquidation. For service/or...

  12. 76 FR 63571 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes Equipped With Pratt & Whitney Canada...

    Science.gov (United States)

    2011-10-13

    ... Federal holidays. For service information identified in this AD, contact Pratt & Whitney Canada, 1000... Directives; Eclipse Aerospace, Inc. Airplanes Equipped With Pratt & Whitney Canada, Corp. PW610F-A Engines..., Inc. Model EA500 airplanes equipped with Pratt & Whitney Canada, Corp. (P&WC) Model PW610F-A engines...

  13. 14 CFR 121.197 - Airplanes: Turbine engine powered: Landing limitations: Alternate airports.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplanes: Turbine engine powered: Landing limitations: Alternate airports. 121.197 Section 121.197 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... Performance Operating Limitations § 121.197 Airplanes: Turbine engine powered: Landing limitations: Alternate...

  14. Proton exchange membrane fuel cells for electrical power generation on-board commercial airplanes.

    Energy Technology Data Exchange (ETDEWEB)

    Curgus, Dita Brigitte; Munoz-Ramos, Karina (Sandia National Laboratories, Albuquerque, NM); Pratt, Joseph William; Akhil, Abbas Ali (Sandia National Laboratories, Albuquerque, NM); Klebanoff, Leonard E.; Schenkman, Benjamin L. (Sandia National Laboratories, Albuquerque, NM)

    2011-05-01

    Deployed on a commercial airplane, proton exchange membrane fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. This work seeks to understand whether on-board fuel cell systems are technically feasible, and, if so, if they offer a performance advantage for the airplane as a whole. Through hardware analysis and thermodynamic and electrical simulation, we found that while adding a fuel cell system using today's technology for the PEM fuel cell and hydrogen storage is technically feasible, it will not likely give the airplane a performance benefit. However, when we re-did the analysis using DOE-target technology for the PEM fuel cell and hydrogen storage, we found that the fuel cell system would provide a performance benefit to the airplane (i.e., it can save the airplane some fuel), depending on the way it is configured.

  15. Proton Exchange Membrane Fuel Cells for Electrical Power Generation On-Board Commercial Airplanes

    Energy Technology Data Exchange (ETDEWEB)

    Pratt, Joesph W. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Klebanoff, Leonard E. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Munoz-Ramos, Karina [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Akhil, Abbas A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Curgus, Dita B. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Schenkman, Benjamin L. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2011-05-01

    Deployed on a commercial airplane, proton exchange membrane fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. This work seeks to understand whether on-board fuel cell systems are technically feasible, and, if so, if they offer a performance advantage for the airplane as a whole. Through hardware analysis and thermodynamic and electrical simulation, we found that while adding a fuel cell system using today’s technology for the PEM fuel cell and hydrogen storage is technically feasible, it will not likely give the airplane a performance benefit. However, when we re-did the analysis using DOE-target technology for the PEM fuel cell and hydrogen storage, we found that the fuel cell system would provide a performance benefit to the airplane (i.e., it can save the airplane some fuel), depending on the way it is configured.

  16. Radiated Emissions from a Remote-Controlled Airplane-Measured in a Reverberation Chamber

    Science.gov (United States)

    Ely, Jay J.; Koppen, Sandra V.; Nguyen, Truong X.; Dudley, Kenneth L.; Szatkowski, George N.; Quach, Cuong C.; Vazquez, Sixto L.; Mielnik, John J.; Hogge, Edward F.; Hill, Boyd L.; hide

    2011-01-01

    A full-vehicle, subscale all-electric model airplane was tested for radiated emissions, using a reverberation chamber. The mission of the NASA model airplane is to test in-flight airframe damage diagnosis and battery prognosis algorithms, and provide experimental data for other aviation safety research. Subscale model airplanes are economical experimental tools, but assembling their systems from hobbyist and low-cost components may lead to unforseen electromagnetic compatibility problems. This report provides a guide for accommodating the on-board radio systems, so that all model airplane systems may be operated during radiated emission testing. Radiated emission data are provided for on-board systems being operated separately and together, so that potential interferors can be isolated and mitigated. The report concludes with recommendations for EMI/EMC best practices for subscale model airplanes and airships used for research.

  17. Simulated airplane headache: a proxy towards identification of underlying mechanisms.

    Science.gov (United States)

    Bui, Sebastian Bao Dinh; Petersen, Torben; Poulsen, Jeppe Nørgaard; Gazerani, Parisa

    2017-12-01

    Airplane Headache (AH) occurs during flights and often appears as an intense, short lasting headache during take-off or landing. Reports are limited on pathological mechanisms underlying the occurrence of this headache. Proper diagnosis and treatments would benefit from identification of potential pathways involved in AH pathogenesis. This study aimed at providing a simulated airplane headache condition as a proxy towards identification of its underlying mechanisms. Fourteen participants including 7 volunteers suffering from AH and 7 healthy matched controls were recruited after meeting the diagnostic and safety criteria based on an approved study protocol. Simulation of AH was achieved by entering a pressure chamber with similar characteristics of an airplane flight. Selected potential biomarkers including salivary prostaglandin E 2 (PGE 2 ), cortisol, facial thermo-images, blood pressure, pulse, and saturation pulse oxygen (SPO) were defined and values were collected before, during and after flight simulation in the pressure chamber. Salivary samples were analyzed with ELISA techniques, while data analysis and statistical tests were handled with SPSS version 22.0. All participants in the AH-group experienced a headache attack similar to AH experience during flight. The non-AH-group did not experience any headaches. Our data showed that the values for PGE 2 , cortisol and SPO were significantly different in the AH-group in comparison with the non-AH-group during the flight simulation in the pressure chamber. The pressure chamber proved useful not only to provoke AH-like attack but also to study potential biomarkers for AH in this study. PGE 2 , and cortisol levels together with SPO presented dysregulation during the simulated AH-attack in affected individuals compared with healthy controls. Based on these findings we propose to use pressure chamber as a model to induce AH, and thus assess new potential biomarkers for AH in future studies.

  18. Likely transmission of norovirus on an airplane, October 2008.

    Science.gov (United States)

    Kirking, Hannah L; Cortes, Jennifer; Burrer, Sherry; Hall, Aron J; Cohen, Nicole J; Lipman, Harvey; Kim, Curi; Daly, Elizabeth R; Fishbein, Daniel B

    2010-05-01

    On 8 October 2008, members of a tour group experienced diarrhea and vomiting throughout an airplane flight from Boston, Massachusetts, to Los Angeles, California, resulting in an emergency diversion 3 h after takeoff. An investigation was conducted to determine the cause of the outbreak, assess whether transmission occurred on the airplane, and describe risk factors for transmission. Passengers and crew were contacted to obtain information about demographics, symptoms, locations on the airplane, and possible risk factors for transmission. Case patients were defined as passengers with vomiting or diarrhea (> or =3 loose stools in 24 h) and were asked to submit stool samples for norovirus testing by real-time reverse-transcription polymerase chain reaction. Thirty-six (88%) of 41 tour group members were interviewed, and 15 (41%) met the case definition (peak date of illness onset, 8 October 2008). Of 106 passengers who were not tour group members, 85 (80%) were interviewed, and 7 (8%) met the case definition after the flight (peak date of illness onset, 10 October 2008). Multivariate logistic regression analysis showed that sitting in an aisle seat (adjusted relative risk, 11.0; 95% confidence interval, 1.4-84.9) and sitting near any tour group member (adjusted relative risk, 7.5; 95% confidence interval, 1.7-33.6) were associated with the development of illness. Norovirus genotype II was detected by reverse-transcription polymerase chain reaction in stool samples from case patients in both groups. Despite the short duration, transmission of norovirus likely occurred during the flight.

  19. Comparison of portable oxygen concentrators in a simulated airplane environment.

    Science.gov (United States)

    Fischer, Rainald; Wanka, Eva R; Einhaeupl, Franziska; Voll, Klaus; Schiffl, Helmut; Lang, Susanne M; Gruss, Martin; Ferrari, Uta

    2013-01-01

    Portable oxygen concentrators (POC) are highly desirable for patients with lung disease traveling by airplane, as these devices allow theoretically much higher travel times if additional batteries can be used. However, it is unclear whether POCs produce enough oxygen in airplanes at cruising altitude, even if complying with aviation regulations. We evaluated five frequently used POCs (XPO2 (Invacare, USA), Freestyle (AirSep C., USA), Evergo (Philipps Healthcare, Germany), Inogen One (Inogen, USA), Eclipse 3 (Sequal, USA)) at an altitude of 2650 m (as simulated airplane environment) in 11 patients with chronic obstructive lung disease (COPD) and compared theses POCs with the standard oxygen system (WS120, EMS Ltd., Germany) used by Lufthansa. Oxygen was delivered by each POC for 30 min to each patient at rest, blood gases were then drawn from the arterialized ear lobe. All POCs were able to deliver enough oxygen to increase the PaO(2) of our subjects by at least 1.40 kPa (10 mmHg). However, to achieve this increase, the two most lightweight POCs (Freestyle and Invacare XPO2) had to be run at their maximum level. This causes a significant reduction of battery life. The three other POCs (EverGo, Inogen One, Eclipse 3) and the WS120 were able to increase the PaO(2) by more than 2.55 kPa (20 mmHg), which provides extra safety for patients with more severe basal hypoxemia. When choosing the right oxygen system for air travel in patients in COPD, not only weight, but also battery life and maximum possible oxygen output must be considered carefully. Copyright © 2012 Elsevier Ltd. All rights reserved.

  20. STATIC TESTS OF UNCONVENTIONAL PROPULSION UNITS FOR ULTRALIGHT AIRPLANES

    Directory of Open Access Journals (Sweden)

    Martin Helmich

    2014-06-01

    Full Text Available This paper presents static tests of a new unconventional propulsion unit for small aviation airplanes. Our laboratory stand – a fan drive demonstrator – enables us to compare various design options. We performed experiments to verify the propulsion functionality and a measurement procedure to determine the available thrust of the propulsion unit and its dependence on engine speed. The results used for subsequent optimization include the operating parameters of the propulsion unit, and the temperature and velocity fields in parts of the air duct.

  1. 77 FR 18719 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-03-28

    ... Boeing Company Model DC-10-10, DC-10- 10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40, DC- 10-40F, MD-10-10F, and MD-10-30F airplanes. The existing AD currently requires installing or..., December 31, 2009), for certain Boeing Model DC-10-10, DC- ] 10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A...

  2. Mechanism behind phase transitions in airplane boarding process

    Science.gov (United States)

    Qiang, Shengjie; Jia, Bin; Huang, Qingxia; Gao, Ziyou

    2016-02-01

    A simple airplane boarding model is built much like an asymmetric exclusion process (ASEP). The dynamics of the model is constrained by local interference between passengers and global seat assignments for individuals. We perform extensive Monte Carlo simulations by using a parallel update rule to determine quantities like boarding time and sequence correlation. Our results clarify the scaling behavior in boarding process and identify a critical value of arrival time interval for boarding time threshold. Three different phases (steady, intermediate and linear) with respect to the boarding time are distinguished and the mechanism behind phase transition is further discussed.

  3. The response of an airplane to random atmospheric disturbances

    Science.gov (United States)

    Diederich, Franklin W

    1958-01-01

    The statistical approach to the gust-load problem, which consists in considering flight through turbulent air to be a stationary random process, is extended by including the effect of lateral variation of the instantaneous gust intensity on the aerodynamic forces. The forces obtained in this manner are used in dynamic analyses of rigid and flexible airplanes free to move vertically, in pitch, and in roll. The effect of the interaction of longitudinal, normal, and lateral gusts on the wind stresses is also considered.

  4. Predicting Tail Buffet Loads of a Fighter Airplane

    Science.gov (United States)

    Moses, Robert W.; Pototzky, Anthony S.

    2006-01-01

    Buffet loads on aft aerodynamic surfaces pose a recurring problem on most twin-tailed fighter airplanes: During maneuvers at high angles of attack, vortices emanating from various surfaces on the forward parts of such an airplane (engine inlets, wings, or other fuselage appendages) often burst, immersing the tails in their wakes. Although these vortices increase lift, the frequency contents of the burst vortices become so low as to cause the aft surfaces to vibrate destructively. Now, there exists a new analysis capability for predicting buffet loads during the earliest design phase of a fighter-aircraft program. In effect, buffet pressures are applied to mathematical models in the framework of a finite-element code, complete with aeroelastic properties and working knowledge of the spatiality of the buffet pressures for all flight conditions. The results of analysis performed by use of this capability illustrate those vibratory modes of a tail fin that are most likely to be affected by buffet loads. Hence, the results help in identifying the flight conditions during which to expect problems. Using this capability, an aircraft designer can make adjustments to the airframe and possibly the aerodynamics, leading to a more robust design.

  5. Nutrient recovery from airplane wastewater: composition, treatment and ecotoxicological assay.

    Science.gov (United States)

    Filho, Jorge Luiz da Paixão; Tonetti, Adriano Luiz; Guimarães, Martha Tavanielli; Silva, Dailto

    2017-04-01

    For the 2014 World Cup and the 2016 Olympic Games, Brazil has expanded its airport infrastructure. This will lead to an increase in wastewater generation from aircrafts. This wastewater is traditionally taken from the aircrafts and disposed in the public sewage collection system. However, this residual water may have a different composition than the usual sanitary sewage. Therefore, it is important to study an alternative to treat this kind of wastewater. Thus, the objective of this study was to characterize and analyze the treatment of wastewater from airplane toilets through chemical precipitation for the removal of ammonia in the form of struvite. The airplanes' effluent showed a composition similar to human urine with pH 8.9, ammonia nitrogen 4,215 mg L -1 , phosphorus 430 mg L -1 and a very high acute toxicity (Vibrio fischeri). The best treatment for struvite formation was with pH 9.0 and molar ratio Mg:NH 4 :PO 4 equal to 1.5:1.0:1.0. In this case, the removal of ammonia and phosphorus achieved 97.0% and 95.3%, respectively. After this procedure, the toxicity by Vibrio fischeri decreased.

  6. 75 FR 81417 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-12-28

    ... Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes AGENCY: Federal Aviation Administration... effective February 1, 2011. Affected ADs (b) None. Applicability (c) This AD applies to Model PA-28-161...

  7. 76 FR 18964 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-04-06

    ... after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  8. 76 FR 15818 - Airworthiness Directives; Reims Aviation S.A. Model F406 Airplanes

    Science.gov (United States)

    2011-03-22

    ...-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  9. 77 FR 21404 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes AGENCY... airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382... this AD, contact Lockheed Martin Corporation/Lockheed Martin Aeronautics Company, Airworthiness Office...

  10. System design overview of JAXA small supersonic experimental airplane (NEXST-1)

    OpenAIRE

    Takami, Hikaru; 高見 光

    2007-01-01

    The system of JAXA small supersonic experimental airplane (NEXST-1: National EXperimental Supersonic Transport-1) has been briefly explained. Some design problems that the designers have encountered have also been briefly explained.

  11. An Evaluation of Automatic Control System Concepts for General Aviation Airplanes

    Science.gov (United States)

    Stewart, E. C.

    1990-01-01

    A piloted simulation study of automatic longitudinal control systems for general aviation airplanes has been conducted. These automatic control systems were designed to make the simulated airplane easy to fly for a beginning or infrequent pilot. Different control systems are presented and their characteristics are documented. In a conventional airplane control system each cockpit controller commands combinations of both the airspeed and the vertical speed. The best system in the present study decoupled the airspeed and vertical speed responses to cockpit controller inputs. An important feature of the automatic system was that neither changing flap position nor maneuvering in steeply banked turns affected either the airspeed or the vertical speed. All the pilots who flew the control system simulation were favorably impressed with the very low workload and the excellent handling qualities of the simulated airplane.

  12. Assessment of community noise for a medium-range airplane with open-rotor engines

    Science.gov (United States)

    Kopiev, V. F.; Shur, M. L.; Travin, A. K.; Belyaev, I. V.; Zamtfort, B. S.; Medvedev, Yu. V.

    2017-11-01

    Community noise of a hypothetical medium-range airplane equipped with open-rotor engines is assessed by numerical modeling of the aeroacoustic characteristics of an isolated open rotor with the simplest blade geometry. Various open-rotor configurations are considered at constant thrust, and the lowest-noise configuration is selected. A two-engine medium-range airplane at known thrust of bypass turbofan engines at different segments of the takeoff-landing trajectory is considered, after the replacement of those engines by the open-rotor engines. It is established that a medium-range airplane with two open-rotor engines meets the requirements of Chapter 4 of the ICAO standard with a significant margin. It is shown that airframe noise makes a significant contribution to the total noise of an airplane with open-rotor engines at landing.

  13. “COANDA-1910” - the first jet propulsor for airplane

    Directory of Open Access Journals (Sweden)

    Romulus PETCU

    2010-12-01

    Full Text Available This paper contains the authors’ research regarding the first airplane equippedwith a jet propulsion system made by Henri Coanda in 1910, also being homage pays toHenri Coanda, his inventor.

  14. 78 FR 41684 - Special Conditions: Embraer S.A. Model EMB-550 Airplanes, Sudden Engine Stoppage

    Science.gov (United States)

    2013-07-11

    ...-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model..., Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington... more-critical airframe supporting structure. Applicability As discussed above, these special conditions...

  15. Proton exchange membrane fuel cells for electrical power generation on-board commercial airplanes

    International Nuclear Information System (INIS)

    Pratt, Joseph W.; Klebanoff, Leonard E.; Munoz-Ramos, Karina; Akhil, Abbas A.; Curgus, Dita B.; Schenkman, Benjamin L.

    2013-01-01

    Highlights: ► We examine proton exchange membrane fuel cells on-board commercial airplanes. ► We model the added fuel cell system’s effect on overall airplane performance. ► It is feasible to implement an on-board fuel cell system with current technology. ► Systems that maximize waste heat recovery are the best performing. ► Current PEM and H 2 storage technology results in an airplane performance penalty. -- Abstract: Deployed on a commercial airplane, proton exchange membrane (PEM) fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. This work seeks to understand whether on-board fuel cell systems are technically feasible, and, if so, if they could offer a performance advantage for the airplane when using today’s off-the-shelf technology. We also examine the effects of the fuel cell system on airplane performance with (1) different electrical loads, (2) different locations on the airplane, and (3) expected advances in fuel cell and hydrogen storage technologies. Through hardware analysis and thermodynamic simulation, we found that an additional fuel cell system on a commercial airplane is technically feasible using current technology. Although applied to a Boeing 787-type airplane, the method presented is applicable to other airframes as well. Recovery and on-board use of the heat and water that is generated by the fuel cell is an important method to increase the benefit of such a system. The best performance is achieved when the fuel cell is coupled to a load that utilizes the full output of the fuel cell for the entire flight. The effects of location are small and location may be better determined by other considerations such as safety and modularity. Although the PEM fuel cell generates power more efficiently than the gas turbine generators currently used, when considering the effect of the fuel cell system on the airplane’s overall performance we found that an overall

  16. Effect of airplane transport of donor livers on post-liver transplantation survival.

    Science.gov (United States)

    Huang, Yi; MacQuillan, Gerry; Adams, Leon A; Garas, George; Collins, Megan; Nwaba, Albert; Mou, Linjun; Bulsara, Max K; Delriviere, Luc; Jeffrey, Gary P

    2016-11-07

    To evaluate the effect of long haul airplane transport of donor livers on post-transplant outcomes. A retrospective cohort study of patients who received a liver transplantation was performed in Perth, Australia from 1992 to 2012. Donor and recipient characteristics information were extracted from Western Australian liver transplantation service database. Patients were followed up for a mean of six years. Patient and graft survival were evaluated and compared between patients who received a local donor liver and those who received an airplane transported donor liver. Predictors of survival were determined by univariate and multivariate analysis using cox regression. One hundred and ninety-three patients received a local donor liver and 93 patients received an airplane transported donor liver. Airplane transported livers had a significantly lower alanine transaminase (mean: 45 U/L vs 84 U/L, P = 0.035), higher donor risk index (mean: 1.88 vs 1.42, P airplane transport retained significance for graft loss (HR = 1.92, 95%CI: 1.16-3.17). One year graft survival was 0.88 for those with a local liver and was 0.71 for those with an airplane transported liver. One year graft loss was due to primary graft non-function or associated with preservation injury in 20.8% of recipients of an airplane transported liver compared with 4.6% in those with a local liver ( P = 0.027). Airplane transport of donor livers was independently associated with reduced graft survival following liver transplantation.

  17. Long-lasting airplane headache in a patient with chronic rhinosinusitis.

    Science.gov (United States)

    Pfund, Z; Trauninger, A; Szanyi, I; Illes, Z

    2010-04-01

    The authors report long-lasting airplane headache in a patient with non-allergic, chronic rhinosinusitis. Association of mucosal inflammation with compromised sinonasal ventilation and sinus barotrauma created a base for not only the pain but also for the prolongation of symptoms. Effective therapy with antihistamine and nasal decongestant supports the theory that sinonasal barotrauma plays a triggering role in the pathophysiology of airplane headache.

  18. Structural concepts and experimental considerations for a versatile high-speed research airplane

    Science.gov (United States)

    Jackson, L. R.; Kirkham, F. S.; Weidner, J. P.

    1978-01-01

    Future aircraft may be hydrogen fueled and fly at hypersonic speeds. The resulting environments will require new structural concepts to satisfy performance goals. Large representative structures will have to be flight tested prior to commitment to a costly vehicle fleet. To perform flight tests, a versatile, economical, high-speed research airplane is defined. Results of this study including experimental considerations for a hypersonic research airplane are reported.

  19. Traian Vuia – the Romanian inventor who first flew a powered airplane in 1906

    Directory of Open Access Journals (Sweden)

    Liviu FILIMON

    2011-09-01

    Full Text Available As observed the beginning of heavier than air devices started with Wright Brothers who flew in 1903 the first catapulted airplane equipped with an engine, similar to present motor gliders. In March 1906 took place the first flight of Vuia’s monoplane using on board installations. Since then a real competition between manufacturers has started to improve their airplanes as they become more efficient. Traian Vuia’s first flights and his beginnings are explained below.

  20. Neural-Based Compensation of Nonlinearities in an Airplane Longitudinal Model with Dynamic-Inversion Control

    OpenAIRE

    Liu, YanBin; Li, YuHui; Jin, FeiTeng

    2017-01-01

    The inversion design approach is a very useful tool for the complex multiple-input-multiple-output nonlinear systems to implement the decoupling control goal, such as the airplane model and spacecraft model. In this work, the flight control law is proposed using the neural-based inversion design method associated with the nonlinear compensation for a general longitudinal model of the airplane. First, the nonlinear mathematic model is converted to the equivalent linear model based on the feedb...

  1. The Dynamic Response of a Large Airplane to Continuous Random Atmospheric Disturbances

    Science.gov (United States)

    Diederich, Franklin W.

    1956-01-01

    The statistical approach to the gust-loads problem, which consists in considering flight though turbulent air to be a stationary random process, is extended by including the effect of lateral variations of the instantaneous gust intensity on the aerodynamic forces and on the resultant motions and stresses of rigid and flexible airplanes. By means of some calculations of normal and rolling accelerations, as well as of the root bending moment, it is shown that these effects may be significant for large airplanes.

  2. Crash tests of four identical high-wing single-engine airplanes

    Science.gov (United States)

    Vaughan, V. L., Jr.; Hayduk, R. J.

    1980-01-01

    Four identical four place, high wing, single engine airplane specimens with nominal masses of 1043 kg were crash tested at the Langley Impact Dynamics Research Facility under controlled free flight conditions. These tests were conducted with nominal velocities of 25 m/sec along the flight path angles, ground contact pitch angles, and roll angles. Three of the airplane specimens were crashed on a concrete surface; one was crashed on soil. Crash tests revealed that on a hard landing, the main landing gear absorbed about twice the energy for which the gear was designed but sprang back, tending to tip the airplane up to its nose. On concrete surfaces, the airplane impacted and remained in the impact attitude. On soil, the airplane flipped over on its back. The crash impact on the nose of the airplane, whether on soil or concrete, caused massive structural crushing of the forward fuselage. The liveable volume was maintained in both the hard landing and the nose down specimens but was not maintained in the roll impact and nose down on soil specimens.

  3. Coastal data accumulation potentials for operational systems using airplanes

    Science.gov (United States)

    Kuhner, M. B.

    1975-01-01

    Potential users of SEASAT for remote sensing of coastal zone phenomena have established a need for resolutions beyond those attainable with SEASAT-A. One method of obtaining higher resolutions would be to fly the instruments aboard airplanes rather than a satellite. The number of aircraft that would be required is estimated along with the rate at which data would be accumulated. Only the East Coast from Maine to Key West is considered. Three different coverage widths are used. The narrowest area is wide enough to cover all bay and estuary regions along the coast; a wider area includes all ocean out to twelve nautical miles from the coast; the maximum size area considered extends out to 200 nautical miles from the coast.

  4. 77 FR 64025 - Special Conditions: Airbus Model A318, A319, A320, and A321 Series Airplanes; Interaction of...

    Science.gov (United States)

    2012-10-18

    ... Series Airplanes; Interaction of Systems and Structures AGENCY: Federal Aviation Administration (FAA... requirements for interactions of systems and structures. Airbus requested, and FAA agrees, that these special...

  5. Follow-On Studies for Design Definition of a Lift/Cruise Fan Technology V/STOL Airplane, Volume 1

    Science.gov (United States)

    1977-01-01

    A three engine, three fan V/STOL airplane was designed for use as a Research Technology Airplane in proof-of-concept of a candidate configuration for use as a Navy multimission airplane. Use of mechanically interconnected variable pitch fans is made to accommodate power transfer for flight control in hover and to provide flight capability in the event of a single engine failure. The airplane is a modification of a T-39A transport. Design definition is provided for high risk propulsion components and a development test program is defined.

  6. 75 FR 43397 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes

    Science.gov (United States)

    2010-07-26

    ... Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes AGENCY: Federal... applies to certain Piper Aircraft, Inc. Models PA-32R-301T and PA-46- 350P airplanes. AD 2010-13-07... stated that Model PA- 32R-301T airplanes, instead of Model PA-46-350P airplanes, are equipped with two of...

  7. 75 FR 43809 - Airworthiness Directives; Piper Aircraft, Inc. PA-28, PA-32, PA-34, and PA-44 Series Airplanes

    Science.gov (United States)

    2010-07-27

    ... Airworthiness Directives; Piper Aircraft, Inc. PA-28, PA-32, PA- 34, and PA-44 Series Airplanes AGENCY: Federal... directive (AD) for certain Piper Aircraft, Inc. (Piper) PA-28, PA-32, PA-34, and PA-44 series airplanes...) to include an AD that would apply to certain Piper Aircraft, Inc. (Piper) PA-28, PA-32, PA- 34, and...

  8. 75 FR 2433 - Special Conditions: Boeing Model 747-8/-8F Airplanes, Systems and Data Networks Security...

    Science.gov (United States)

    2010-01-15

    ... Security--Protection of Airplane Systems and Data Networks From Unauthorized External Access AGENCY... external systems and networks may result in security vulnerabilities to the airplane's systems. The... network sources. The architecture and network configuration may allow the exploitation of network security...

  9. 78 FR 68985 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-18

    ... computer network system, and a network extension device. The network extension device will improve domain... Series Airplanes; Aircraft Electronic System Security Protection From Unauthorized Internal Access AGENCY... and connectivity of the passenger service computer network systems to the airplane critical systems...

  10. Requirements and feasibility study of flight demonstration of Active Controls Technology (ACT) on the NASA 515 airplane

    Science.gov (United States)

    Gordon, C. K.

    1975-01-01

    A preliminary design study was conducted to evaluate the suitability of the NASA 515 airplane as a flight demonstration vehicle, and to develop plans, schedules, and budget costs for fly-by-wire/active controls technology flight validation in the NASA 515 airplane. The preliminary design and planning were accomplished for two phases of flight validation.

  11. The velocity distribution caused by an airplane at the points of a vertical plane containing the span

    Science.gov (United States)

    Munk, Max M

    1925-01-01

    A formula for the computation of the vertical velocity component on all sides of an airplane is deduced and discussed. The formation is of value for the interpretation of such free flight tests where two airplanes fly alongside each other to facilitate observation.

  12. The risk of PTSD and depression after an airplane crash and its potential association with physical injury: A longitudinal study

    NARCIS (Netherlands)

    Gouweloos, Juul; Postma, Ingri L. E.; Te Brake, Hans; Sijbrandij, Marit; Kleber, Rolf J.; Goslings, J. Carel

    2016-01-01

    In 2009, a commercial airplane crashed near Amsterdam. This longitudinal study aims to investigate (1) the proportion of survivors of the airplane crash showing a probable posttraumatic stress disorders (PTSD) or depressive disorder, and (2) whether symptoms of PTSD and depression were predicted by

  13. 75 FR 18134 - Function and Reliability Flight Testing for Turbine-Powered Airplanes Weighing 6,000 Pounds or Less

    Science.gov (United States)

    2010-04-09

    ... Airplanes Weighing 6,000 Pounds or Less AGENCY: Federal Aviation Administration, DOT. ACTION: Notice of... flight testing to include all turbine-powered airplanes weighing 6,000 pounds or less. Revising the... weighing more than 6,000 pounds maximum certified weight. Function and reliability flight testing is not...

  14. 77 FR 69571 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Limit Pilot Forces for Sidestick Control

    Science.gov (United States)

    2012-11-20

    ... owner operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Todd Martin, FAA, Airframe and Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft...

  15. 78 FR 26280 - Special Conditions: Embraer, S.A., Model EMB-550 Airplane; Side-Facing Seats; Installation of...

    Science.gov (United States)

    2013-05-06

    ... owner operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Jayson Claar, FAA, Airframe and Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft...

  16. 14 CFR 125.333 - Stowage of food, beverage, and passenger service equipment during airplane movement on the...

    Science.gov (United States)

    2010-01-01

    ... food, beverage, and passenger service equipment during airplane movement on the surface, takeoff, and... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Stowage of food, beverage, and passenger... certificate holder may move an airplane on the surface, take off, or land unless each food and beverage tray...

  17. Modelling and Simulation of Fuel Cell Dynamics for Electrical Energy Usage of Hercules Airplanes

    Directory of Open Access Journals (Sweden)

    Hamid Radmanesh

    2014-01-01

    Full Text Available Dynamics of proton exchange membrane fuel cells (PEMFC with hydrogen storage system for generating part of Hercules airplanes electrical energy is presented. Feasibility of using fuel cell (FC for this airplane is evaluated by means of simulations. Temperature change and dual layer capacity effect are considered in all simulations. Using a three-level 3-phase inverter, FC’s output voltage is connected to the essential bus of the airplane. Moreover, it is possible to connect FC’s output voltage to airplane DC bus alternatively. PID controller is presented to control flow of hydrogen and oxygen to FC and improve transient and steady state responses of the output voltage to load disturbances. FC’s output voltage is regulated via an ultracapacitor. Simulations are carried out via MATLAB/SIMULINK and results show that the load tracking and output voltage regulation are acceptable. The proposed system utilizes an electrolyser to generate hydrogen and a tank for storage. Therefore, there is no need for batteries. Moreover, the generated oxygen could be used in other applications in airplane.

  18. Ultrasonic imaging of corrosion and fatigue cracks in multilayered airplane structures

    Science.gov (United States)

    Komsky, Igor N.; Achenbach, Jan D.

    1996-11-01

    Application of ultrasonic imaging to the inspection of multilayered airplane structures can provide comprehensive information on possible defects such as corrosion and cracks. A quantitative assessment of defects in internal layers of airplane structures using this technique can be accomplished form an external surface of the airplane skin. No disassembly is required for component evaluation. Therefore this ultrasonic technique can be extremely useful for cost-effective maintenance of airplanes. Three different ultrasonic techniques developed for inspection of the DC-9 and DC-10 airplanes are discussed in this paper. One of the techniques was used for evaluation of corrosion and stress corrosion cracks in a DC-9 tee cap, other techniques have been developed for fatigue crack characterization in a DC-9 rear spar and a DC-10 spar-cap/strap connection, respectively. All three techniques were developed to be applied with the same type of data acquisition and imaging system. However for each kind of flaw and structural configuration substantial modifications of the scanning and the data acquisition procedures have been made. {Peculiarities of each ultrasonic technique will be discussed. The ultrasonic technique for the inspection of the DC-9 tee cap has been approved by the FAA as an alternate means of compliance to meet the requirements of the DC-9 Service Bulletin.

  19. Modeling the Aerodynamics and Performances of a Historic Airplane: the Spanish

    Directory of Open Access Journals (Sweden)

    A. González-Betes

    2003-01-01

    Full Text Available The process of modeling the aerodynamics and performances of a historic airplane is very similar to the conceptual and preliminary design phases of a new plane, with the advantage of knowing the configuration and that the airplane was airworthy; thus it is unnecessary to outline and assess many different alternatives. However, the drag polar, the real performances, stability features, etc, are still unknown. For various reasons (in particular because of two World Wars, or the Civil War in the Spanish case most details of many historical airplanes have been lost.In the present research work, the situation is as follows. In June 1933 the "Cuatro Vientos", a Spanish-built Bréguet XIX Super TR, flew non-stop from Seville to Cuba; a distance of 7500 km (about 4100 nautical miles in around 40 hours. A few days later, in a far less complicated stage between Havana and Mexico, the airplane was lost with its occupants to a storm in the Yucatan peninsula.The modeling considered in this paper starts by addressing the aerodynamic modifications introduced in the airplane for the extremely long flight. Then, with the help of old and present day aerodynamic data and methods the drag polar is estimated. The available engine data is completed and extrapolated to obtain information on power and fuel consumption. Finally, all this data is integrated to provide a reliable and technically sound reproduction of the Seville-Cuba flight.

  20. ON MODERN APPROACH TO AIRPLANE-TYPE UNMANNED AERIAL VEHICLES DESIGN WITH SHORT TAKEOFF AND LANDING

    Directory of Open Access Journals (Sweden)

    Oleg P. Minin

    2017-11-01

    Full Text Available This publication opens a series of review papers devoted to the current design problems of the next generation unmanned airplanes that are expected to appear in the period from 2025 to 2035. The series of papers considers airplanes with vertical take-off and landing, air launch of small satellites into the orbit, cargo transportation tasks, issues related to new aerodynamic forms, as well as hybrid, combined and distributed power units. The first paper of the cycle is devoted to the conceptual aerodynamic design of the airplanes with a short take-off and landing, and with technical and economic characteristics on cruise flight conditions no worse than for traditional airplane based on aerodrome with long airstrip. We consider traditional linear methods for aerodynamic scheme analysis and weight analysis, as well. The main relationships and references to the works enabling the parametric analysis of the aerodynamic configuration are given. It is concluded that one of the most promising areas in the field of airplanes with a short take-off and landing is the development of aerodynamic circuits constructed as a "flying wing" of small aspect ratio and large structural height.

  1. Modelling and simulation of fuel cell dynamics for electrical energy usage of Hercules airplanes.

    Science.gov (United States)

    Radmanesh, Hamid; Heidari Yazdi, Seyed Saeid; Gharehpetian, G B; Fathi, S H

    2014-01-01

    Dynamics of proton exchange membrane fuel cells (PEMFC) with hydrogen storage system for generating part of Hercules airplanes electrical energy is presented. Feasibility of using fuel cell (FC) for this airplane is evaluated by means of simulations. Temperature change and dual layer capacity effect are considered in all simulations. Using a three-level 3-phase inverter, FC's output voltage is connected to the essential bus of the airplane. Moreover, it is possible to connect FC's output voltage to airplane DC bus alternatively. PID controller is presented to control flow of hydrogen and oxygen to FC and improve transient and steady state responses of the output voltage to load disturbances. FC's output voltage is regulated via an ultracapacitor. Simulations are carried out via MATLAB/SIMULINK and results show that the load tracking and output voltage regulation are acceptable. The proposed system utilizes an electrolyser to generate hydrogen and a tank for storage. Therefore, there is no need for batteries. Moreover, the generated oxygen could be used in other applications in airplane.

  2. Electric Propulsion Concepts for an Inverted Joined Wing Airplane Demonstrator

    Directory of Open Access Journals (Sweden)

    Cezary Galinski

    2017-05-01

    Full Text Available One of the airplane design concepts that potentially allows for significantly increased efficiency, but has not yet been investigated thoroughly, is the inverted joined wing configuration, where the upper wing is positioned in front of the lower one. We performed wind tunnel and flight testing of a demonstrator of this concept, first by applying electrical propulsion to simplify wind tunnel testing, and then the same electrical-propulsion demonstrator performed several flights. As the chosen propulsion method proved to be too cumbersome for an intensive flight campaign and significant loss of battery performance was also observed, the electrical propulsion was then replaced by internal combustion propulsion in the second phase, involving longer-duration flight testing. Next we identified and analyzed two potentially beneficial modifications to the design tested: one involved shifting the center of gravity towards the aft, the other involved modifying the thrust vector position, both with the assumption that electric motors can be applied for propulsion. On this basis, the paper finishes with some conclusions concerning a new concept of electrical propulsion for an inverted joined wing design, combining two ideas: hybridization and distribution along the aft wing leading edge.

  3. Tradeoff methods in multiobjective insensitive design of airplane control systems

    Science.gov (United States)

    Schy, A. A.; Giesy, D. P.

    1984-01-01

    The latest results of an ongoing study of computer-aided design of airplane control systems are given. Constrained minimization algorithms are used, with the design objectives in the constraint vector. The concept of Pareto optimiality is briefly reviewed. It is shown how an experienced designer can use it to find designs which are well-balanced in all objectives. Then the problem of finding designs which are insensitive to uncertainty in system parameters are discussed, introducing a probabilistic vector definition of sensitivity which is consistent with the deterministic Pareto optimal problem. Insensitivity is important in any practical design, but it is particularly important in the design of feedback control systems, since it is considered to be the most important distinctive property of feedback control. Methods of tradeoff between deterministic and stochastic-insensitive (SI) design are described, and tradeoff design results are presented for the example of the a Shuttle lateral stability augmentation system. This example is used because careful studies have been made of the uncertainty in Shuttle aerodynamics. Finally, since accurate statistics of uncertain parameters are usually not available, the effects of crude statistical models on SI designs are examined.

  4. Assessment of noise in the airplane cabin environment.

    Science.gov (United States)

    Zevitas, Christopher D; Spengler, John D; Jones, Byron; McNeely, Eileen; Coull, Brent; Cao, Xiaodong; Loo, Sin Ming; Hard, Anna-Kate; Allen, Joseph G

    2018-03-15

    To measure sound levels in the aircraft cabin during different phases of flight. Sound level was measured on 200 flights, representing six aircraft groups using continuous monitors. A linear mixed-effects model with random intercept was used to test for significant differences in mean sound level by aircraft model and across each flight phase as well as by flight phase, airplane type, measurement location and proximity to engine noise. Mean sound levels across all flight phases and aircraft groups ranged from 37.6 to >110 dB(A) with a median of 83.5 dB(A). Significant differences in noise levels were also observed based on proximity to the engines and between aircraft with fuselage- and wing mounted engines. Nine flights (4.5%) exceeded the recommended 8-h TWA exposure limit of 85 dB(A) by the NIOSH and ACGIH approach, three flights (1.5%) exceeded the 8-h TWA action level of 85 dB(A) by the OSHA approach, and none of the flights exceeded the 8-h TWA action level of 90 dB(A) by the OSHA PEL approach. Additional characterization studies, including personal noise dosimetry, are necessary to document accurate occupational exposures in the aircraft cabin environment and identify appropriate response actions. FAA should consider applying the more health-protective NIOSH/ACGIH occupational noise recommendations to the aircraft cabin environment.

  5. Simulation model of a twin-tail, high performance airplane

    Science.gov (United States)

    Buttrill, Carey S.; Arbuckle, P. Douglas; Hoffler, Keith D.

    1992-01-01

    The mathematical model and associated computer program to simulate a twin-tailed high performance fighter airplane (McDonnell Douglas F/A-18) are described. The simulation program is written in the Advanced Continuous Simulation Language. The simulation math model includes the nonlinear six degree-of-freedom rigid-body equations, an engine model, sensors, and first order actuators with rate and position limiting. A simplified form of the F/A-18 digital control laws (version 8.3.3) are implemented. The simulated control law includes only inner loop augmentation in the up and away flight mode. The aerodynamic forces and moments are calculated from a wind-tunnel-derived database using table look-ups with linear interpolation. The aerodynamic database has an angle-of-attack range of -10 to +90 and a sideslip range of -20 to +20 degrees. The effects of elastic deformation are incorporated in a quasi-static-elastic manner. Elastic degrees of freedom are not actively simulated. In the engine model, the throttle-commanded steady-state thrust level and the dynamic response characteristics of the engine are based on airflow rate as determined from a table look-up. Afterburner dynamics are switched in at a threshold based on the engine airflow and commanded thrust.

  6. Approximations for column effect in airplane wing spars

    Science.gov (United States)

    Warner, Edward P; Short, Mac

    1927-01-01

    The significance attaching to "column effect" in airplane wing spars has been increasingly realized with the passage of time, but exact computations of the corrections to bending moment curves resulting from the existence of end loads are frequently omitted because of the additional labor involved in an analysis by rigorously correct methods. The present report represents an attempt to provide for approximate column effect corrections that can be graphically or otherwise expressed so as to be applied with a minimum of labor. Curves are plotted giving approximate values of the correction factors for single and two bay trusses of varying proportions and with various relationships between axial and lateral loads. It is further shown from an analysis of those curves that rough but useful approximations can be obtained from Perry's formula for corrected bending moment, with the assumed distance between points of inflection arbitrarily modified in accordance with rules given in the report. The discussion of general rules of variation of bending stress with axial load is accompanied by a study of the best distribution of the points of support along a spar for various conditions of loading.

  7. Trade Study of Multiple Thruster Options for the Mars Airplane Concept

    Science.gov (United States)

    Kuhl, Christopher A.; Gayle, Steven W.; Hunter, Craig A.; Kenney, Patrick S.; Scola, Salvatore; Paddock, David A.; Wright, Henry S.; Gasbarre, Joseph F.

    2009-01-01

    A trade study was performed at NASA Langley Research Center under the Planetary Airplane Risk Reduction (PARR) project (2004-2005) to examine the option of using multiple, smaller thrusters in place of a single large thruster on the Mars airplane concept with the goal to reduce overall cost, schedule, and technical risk. The 5-lbf (22N) thruster is a common reaction control thruster on many satellites. Thousands of these types of thrusters have been built and flown on numerous programs, including MILSTAR and Intelsat VI. This study has examined the use of three 22N thrusters for the Mars airplane propulsion system and compared the results to those of the baseline single thruster system.

  8. Analysis of means of improving the uncontrolled lateral motions of personal airplanes

    Science.gov (United States)

    Mckinney, Marion O , Jr

    1951-01-01

    A theoretical analysis has been made of means of improving the uncontrolled motions of personal airplanes. The purpose of this investigation was to determine whether such airplanes could be made to fly uncontrolled for an indefinite period of time without getting into dangerous attitudes and for a reasonable period of time (1 to 3 min) without deviating excessively from their original course. The results of this analysis indicated that the uncontrolled motions of a personal airplane could be made safe as regards spiral tendencies and could be greatly improved as regards maintenance of course without resort to an autopilot. The only way to make the uncontrolled motions completely satisfactory as regards continuous maintenance of course, however, is to use a conventional type of autopilot.

  9. Research on the mechanical behaviour of an airplane component made by selective laser melting technology

    Directory of Open Access Journals (Sweden)

    Păcurar Răzvan

    2017-01-01

    Full Text Available The main objective of the presented research consists in the redesign of an airplane component to decrease its weight, without affecting the mechanical behaviour of the component, at the end. Femap NX Nastran and ANSYS FEA programs were used for the shape optimization and for the estimation of the mechanical behaviour of a fixing clamp that was used to sustain the hydraulic pipes that are passing through an airplane fuselage, taking into consideration two types of raw materials – Ti6Al4V and AlSi12 powder from which this component could be manufactured by using the selective laser melting (SLM technology. Based on the obtained results, the airplane component was finally manufactured from titanium alloy using the SLM 250 HL equipment that is available at SLM Solutions GmbH company from Luebeck, in Germany.

  10. Oblique-wing research airplane motion simulation with decoupling control laws

    Science.gov (United States)

    Kempel, Robert W.; Mc Neill, Walter E.; Maine, Trindel A.

    1988-01-01

    A large piloted vertical motion simulator was used to assess the performance of a preliminary decoupling control law for an early version of the F-8 oblique wing research demonstrator airplane. Evaluations were performed for five discrete flight conditions, ranging from low-altitude subsonic Mach numbers to moderate-altitude supersonic Mach numbers. Asymmetric sideforce as a function of angle of attack was found to be the primary cause of both the lateral acceleration noted in pitch and the tendency to roll into left turns and out of right turns. The flight control system was shown to be effective in generally decoupling the airplane and reducing the lateral acceleration in pitch maneuvers.

  11. A Hardware-in-the-Loop Simulator for Software Development for a Mars Airplane

    Science.gov (United States)

    Slagowski, Stefan E.; Vican, Justin E.; Kenney, P. Sean

    2007-01-01

    Draper Laboratory recently developed a Hardware-In-The-Loop Simulator (HILSIM) to provide a simulation of the Aerial Regional-scale Environmental Survey (ARES) airplane executing a mission in the Martian environment. The HILSIM was used to support risk mitigation activities under the Planetary Airplane Risk Reduction (PARR) program. PARR supported NASA Langley Research Center's (LaRC) ARES proposal efforts for the Mars Scout 2011 opportunity. The HILSIM software was a successful integration of two simulation frameworks, Draper's CSIM and NASA LaRC's Langley Standard Real-Time Simulation in C++ (LaSRS++).

  12. Airplane Ice Detector Based on a Microwave Transmission Line

    Science.gov (United States)

    Ngo, Phong; Arndt, G. Dickey; Carl, James R.

    2004-01-01

    An electronic instrument that could detect the potentially dangerous buildup of ice on an airplane wing is undergoing development. The instrument is based on a microwave transmission line configured as a capacitance probe: at selected spots, the transmission-line conductors are partly exposed to allow any ice and/or liquid water present at those spots to act as predominantly capacitive electrical loads on the transmission line. These loads change the input impedance of the transmission line, as measured at a suitable excitation frequency. Thus, it should be possible to infer the presence of ice and/or liquid water from measurements of the input impedance and/or electrical parameters related to the input impedance. The sensory transmission line is of the microstrip type and thus thin enough to be placed on an airplane wing without unduly disturbing airflow in flight. The sensory spots are small areas from which the upper layer of the microstrip has been removed to allow any liquid water or ice on the surface to reach the transmission line. The sensory spots are spaced at nominal open-circuit points, which are at intervals of a half wavelength (in the transmission line, not in air) at the excitation frequency. The excitation frequency used in the experiments has been 1 GHz, for which a half wavelength in the transmission line is .4 in. (.10 cm). The figure depicts a laboratory prototype of the instrument. The impedance-related quantities chosen for use in this version of the instrument are the magnitude and phase of the scattering parameter S11 as manifested in the in-phase (I ) and quadrature (Q) outputs of the phase detector. By careful layout of the transmission line (including the half-wavelength sensor spacing), one can ensure that the amplitude and phase of the input to the phase detector keep shifting in the same direction as ice forms on one or more of the sensor areas. Although only one transmission-line sensor strip is used in the laboratory version, in a

  13. Electromagnetic compatibility and the all-electric airplane

    Science.gov (United States)

    Christman, Al

    1995-01-01

    NASA is studying the feasibility of installing 'all-electric' controls in future commercial aircraft, replacing the current hydraulic and pneumatic systems. Planes utilizing such equipment should weigh less and be cheaper to maintain, but might also be susceptible to interference from undesired external electromagnetic fields. Possible sources of these extraneous signals include radio and television broadcasters, two-way communications stations, and radar installations of all kinds. One way to reduce the hazard would be to use fiber-optic cables to carry signals from the cockpit to the various points of use, a concept known as 'fly-by-light' or FBL. However, electrical circuits (PBW, or 'power-by-wire') would still be required at both ends of the cables to perform control functions, so the possibility of harmful interference would remain. Computer models for two different antennas were created in order to find the magnitude of the electric fields which would be generated in the airspace around them while in the transmit mode. The first antenna was a horizontal 'rhombic' used by the Voice of America (VOA) for long-distance short-wave broadcasting. The second antenna was a multi-element 'log-periodic dipole array' (LPDA) of a type often used for two-way radio communications. For each case, a specified amount of power was applied in the computer model, and the resulting electric field intensity was predicted at a variety of locations surrounding the antenna. This information will then be used to calculate the levels of interference which could occur inside an airplane flying in the vicinity of these radiation emitters.

  14. Scaling behavior of an airplane-boarding model.

    Science.gov (United States)

    Brics, Martins; Kaupužs, Jevgenijs; Mahnke, Reinhard

    2013-04-01

    An airplane-boarding model, introduced earlier by Frette and Hemmer [Phys. Rev. E 85, 011130 (2012)], is studied with the aim of determining precisely its asymptotic power-law scaling behavior for a large number of passengers N. Based on Monte Carlo simulation data for very large system sizes up to N=2(16)=65536, we have analyzed numerically the scaling behavior of the mean boarding time and other related quantities. In analogy with critical phenomena, we have used appropriate scaling Ansätze, which include the leading term as some power of N (e.g., [proportionality]N(α) for ), as well as power-law corrections to scaling. Our results clearly show that α=1/2 holds with a very high numerical accuracy (α=0.5001±0.0001). This value deviates essentially from α=/~0.69, obtained earlier by Frette and Hemmer from data within the range 2≤N≤16. Our results confirm the convergence of the effective exponent α(eff)(N) to 1/2 at large N as observed by Bernstein. Our analysis explains this effect. Namely, the effective exponent α(eff)(N) varies from values about 0.7 for small system sizes to the true asymptotic value 1/2 at N→∞ almost linearly in N(-1/3) for large N. This means that the variation is caused by corrections to scaling, the leading correction-to-scaling exponent being θ≈1/3. We have estimated also other exponents: ν=1/2 for the mean number of passengers taking seats simultaneously in one time step, β=1 for the second moment of t(b), and γ≈1/3 for its variance.

  15. Scaling behavior of an airplane-boarding model

    Science.gov (United States)

    Brics, Martins; Kaupužs, Jevgenijs; Mahnke, Reinhard

    2013-04-01

    An airplane-boarding model, introduced earlier by Frette and Hemmer [Phys. Rev. EPLEEE81539-375510.1103/PhysRevE.85.011130 85, 011130 (2012)], is studied with the aim of determining precisely its asymptotic power-law scaling behavior for a large number of passengers N. Based on Monte Carlo simulation data for very large system sizes up to N=216=65536, we have analyzed numerically the scaling behavior of the mean boarding time and other related quantities. In analogy with critical phenomena, we have used appropriate scaling Ansätze, which include the leading term as some power of N (e.g., ∝Nα for ), as well as power-law corrections to scaling. Our results clearly show that α=1/2 holds with a very high numerical accuracy (α=0.5001±0.0001). This value deviates essentially from α≃0.69, obtained earlier by Frette and Hemmer from data within the range 2≤N≤16. Our results confirm the convergence of the effective exponent αeff(N) to 1/2 at large N as observed by Bernstein. Our analysis explains this effect. Namely, the effective exponent αeff(N) varies from values about 0.7 for small system sizes to the true asymptotic value 1/2 at N→∞ almost linearly in N-1/3 for large N. This means that the variation is caused by corrections to scaling, the leading correction-to-scaling exponent being θ≈1/3. We have estimated also other exponents: ν=1/2 for the mean number of passengers taking seats simultaneously in one time step, β=1 for the second moment of tb, and γ≈1/3 for its variance.

  16. Time-History Data of Maneuvers Performed by a Republic F84G Airplane During Squadron Operational Training

    Science.gov (United States)

    Hamer, Harold A.; Mayo, Alton P.

    1953-01-01

    Preliminary results of one phase of a control-motion study program involving several jet fighter-type airplanes are presented in time-history form and are summarized as maximum measured quantities plotted against indicated airspeed. The results pertain to approximately 1,000 maneuvers performed by a Republic F-84G jet-fighter airplane during squadron operational training. The data include most tactical maneuvers of which the F-84G airplane is capable. Maneuvers were performed at pressure altitudes of 0 to 30,000 feet with indicated airspeeds ranging from the stalling speed to approximately 515 knots.

  17. 75 FR 70854 - Harmonization of Various Airworthiness Standards for Transport Category Airplanes-Flight Rules

    Science.gov (United States)

    2010-11-19

    ... ensures that transport category airplanes have basic lateral and directional stability, proportionality.... Revise Sec. 25.177(c) to require that proportionality criteria must also be met at the sideslip angles..., Regulatory Flexibility Determination, International Trade Impact Assessment, and Unfunded Mandates Assessment...

  18. 75 FR 61345 - Airworthiness Directives; Eclipse Aerospace, Inc. Model EA500 Airplanes

    Science.gov (United States)

    2010-10-05

    ... an older version of AVIO to upgrade to AVIO NG since it is more than the value of the airplane. We... AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. Related Information (h) For more information about this...

  19. 77 FR 21395 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Science.gov (United States)

    2012-04-10

    ... and correct exponential crack growth, which could lead to failure of the lap joint over a certain... not detected and corrected, can result in an exponential crack growth rate, possibly leading to... airplanes; certificated in any category; serial numbers 20103 through 20252 inclusive, 20254 through 20267...

  20. 78 FR 275 - Airworthiness Directives; REIMS Aviation S.A. Airplanes

    Science.gov (United States)

    2013-01-03

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa... requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace...

  1. 76 FR 48045 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-08-08

    ... material at the FAA, call (816) 329-4148; e-mail: albert.mercado@faa.gov . Examining the AD Docket You may... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  2. 75 FR 20518 - Special Conditions: Cirrus Design Corporation Model SF50 Airplane; Full Authority Digital Engine...

    Science.gov (United States)

    2010-04-20

    ... Airplane; Full Authority Digital Engine Control (FADEC) System AGENCY: Federal Aviation Administration (FAA... takeoff weight will be at or below 6000 lbs with a range at economy cruise of roughly 1000 nm. Cirrus... classified as catastrophic, but that the digital engine control must provide an equivalent reliability to...

  3. 14 CFR 121.185 - Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.

    Science.gov (United States)

    2010-01-01

    ...: Landing limitations: Destination airport. 121.185 Section 121.185 Aeronautics and Space FEDERAL AVIATION...: Destination airport. (a) Except as provided in paragraph (b) of this section no person operating a... determining the allowable landing weight at the destination airport the following is assumed: (1) The airplane...

  4. 14 CFR 121.205 - Nontransport category airplanes: Landing limitations: Alternate airport.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Nontransport category airplanes: Landing limitations: Alternate airport. 121.205 Section 121.205 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... airport. No person may list an airport as an alternate airport in a dispatch or flight release for a...

  5. 14 CFR 121.187 - Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.

    Science.gov (United States)

    2010-01-01

    ...: Landing limitations: Alternate airport. 121.187 Section 121.187 Aeronautics and Space FEDERAL AVIATION...: Alternate airport. (a) No person may list an airport as an alternate airport in a dispatch or flight release unless the airplane (at the weight anticipated at the time of arrival at the airport), based on the...

  6. 76 FR 19719 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-04-08

    ... Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... occupants. To correct this potentially unsafe condition, SAAB has published Service Bulletin (SB) 2000-32... described above, this EASA AD requires the accomplishment of the actions described in SAAB SB 2000-32-073...

  7. 75 FR 77796 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2010-12-14

    ..., Saab Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... the rear spar upper cap of the horizontal stabilizer of SAAB 2000 aeroplanes. The affected areas are... 2000 aeroplanes. The affected areas are adjacent to the inboard elevator hinge where the electrical...

  8. 76 FR 31508 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-06-01

    ... Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... pressure bulkhead of SAAB 2000 aeroplanes, located on the rear side of the bulkhead at the bottom outboard... products. The MCAI states: Corrosion damage has been found on the aft pressure bulkhead of SAAB 2000...

  9. 76 FR 13072 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-03-10

    ... Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... upper cap of the horizontal stabilizer of SAAB 2000 aeroplanes. The affected areas are adjacent to the... of the horizontal stabilizer of SAAB 2000 aeroplanes. The affected areas are adjacent to the inboard...

  10. 76 FR 41665 - Airworthiness Directives; Saab AB, Saab Aerosystems Model SAAB 2000 Airplanes

    Science.gov (United States)

    2011-07-15

    ... Aerosystems Model SAAB 2000 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... potentially unsafe condition, SAAB has published Service Bulletin (SB) 2000-32-073, describing a inspection of... requires the accomplishment of the actions described in SAAB SB 2000-32-073. Required actions, if any loose...

  11. Teaching Lean Six Sigma within a Supply Chain Context: The Airplane Supply Chain Simulation

    Science.gov (United States)

    Ellis, Scott C.; Goldsby, Thomas J.; Bailey, Ana M.; Oh, Jae-Young

    2014-01-01

    Lean six sigma is a management methodology that firms can employ to achieve substantial improvement in supply chain performance. However, few pedagogical exercises facilitate students' use of a comprehensive set of lean six sigma principles within a supply chain context. We describe the Airplane Supply Chain Simulation that helps students…

  12. 77 FR 1614 - Harmonization of Airworthiness Standards for Transport Category Airplanes-Landing Gear Retracting...

    Science.gov (United States)

    2012-01-11

    ... economic impact on a substantial number of small entities. C. International Trade Impact Assessment The...-1193; Amdt. No. 25-136] RIN 2120-AJ80 Harmonization of Airworthiness Standards for Transport Category... airworthiness standards for transport category airplanes on landing gear retracting mechanisms and the pilot...

  13. 78 FR 52841 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes AGENCY... airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L... this AD, contact Lockheed Martin Corporation/Lockheed Martin Aeronautics Company, L-1011 Technical...

  14. 76 FR 82106 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2011-12-30

    ... Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes AGENCY... airworthiness directive (AD) for certain Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L..., Lockheed Martin Corporation/Lockheed Martin Aeronautics Company, Airworthiness Office, Dept. 6A0M, Zone...

  15. 77 FR 63275 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-10-16

    ... Corporation/Lockheed Martin Aeronautics Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L.../Lockheed Martin Aeronautics Company, Airworthiness Office, Dept. 6A0M, Zone 0252, Column P-58, 86 S. Cobb...

  16. Light airplane crash tests at impact velocities of 13 and 27 m/sec

    Science.gov (United States)

    Alfaro-Bou, E.; Vaughan, V. L., Jr.

    1977-01-01

    Two similar general aviation airplanes were crash tested at the Langley impact dynamics research facility at velocities of 13 and 27 m/sec. Other flight parameters were held constant. The facility, instrumentation, tests specimens, and test method are briefly described. Structural damage and accelerometer data are discussed.

  17. 75 FR 53843 - Airworthiness Directives; The Boeing Company Model 737-100 and -200 Series Airplanes

    Science.gov (United States)

    2010-09-02

    ... high flight cycle stresses from both pressurization and maneuver load. We are issuing this AD to detect... comply with the required inspections. The average labor rate is $85 per work-hour. Based on these figures... modification (for Group 1-3 airplanes). The average labor rate is $85 per work-hour. Required parts cost about...

  18. 78 FR 77611 - Special Conditions: Airbus, A350-900 Series Airplane; High Speed Protection System

    Science.gov (United States)

    2013-12-24

    ... protected by the flight control laws from getting into non- symmetric upset conditions. The proposed special... the airplane is protected by the flight control laws from getting into non-symmetric upset conditions... CFR part 36 and the FAA must issue a finding of regulatory adequacy under section 611 of Public Law 92...

  19. 76 FR 36865 - Special Conditions: Gulfstream Model GVI Airplane; Interaction of Systems and Structures

    Science.gov (United States)

    2011-06-23

    ... adequacy pursuant to section 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues... stability of the airplane. These systems include the GVI's flight control systems, autopilots, stability... flight control systems, autopilots, stability augmentation systems, load alleviation systems, fuel...

  20. 76 FR 36870 - Special Conditions: Gulfstream Model GVI Airplane; Design Roll Maneuver Requirement for...

    Science.gov (United States)

    2011-06-23

    ... issue a finding of regulatory adequacy pursuant to section 611 of Public Law 92-574, the ``Noise Control... Requirement for Electronic Flight Controls AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final... airplane will have a novel or unusual design feature associated with an electronic flight control system...