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Author Gowdy, Van.

Title Human factors associated with the certification of airplane passenger seats : life preserver retrieval / Van Gowdy, Richard DeWeese.

Imprint Washington, DC : U.S. Dept. of Transportation, Federal Aviation Administration, Office of Aerospace Medicine, [2003]


Location Call No. OPAC Message Status
 Axe Federal Documents Online  TD 4.210:03/9    ---  Available
Description 1 online resource (i, 13 pages) : illustrations (some color)
text txt rdacontent
computer c rdamedia
online resource cr rdacarrier
Note Title from title screen (viewed Oct. 20, 2010).
"May 2003."
Performed by the FAA Civil Aerospace Medical Institute.
Bibliography Includes bibliographical references (page 13).
Summary A series of human subject tests were conducted by the Biodynamics Research Team at the FAA's Civil Aerospace Medical Institute (CAMI) to investigate human factors associated with the "easy reach" requirement in FAA regulations for under-seat mounted life preservers. The protocol was designed to observe and measure the effects of human physical attributes and life preserver installation features relevant to the retrieval of life preservers. A mockup of a 30-inch pitch, economy class transport passenger seat installation was used to evaluate 4 configurations of life preserver installations. The position of the pull-strap, used to open the life preserver container, was the independent variable. One hundred thirty-two adult subjects were tested. Each subject was seated, restrained by the seat's lap belts, instructed to reach beneath the seat, open the lifer preserver container, and extract the packaged life preserver. The time for retrieval of the life vest was measured from videotapes of each test. The videotapes were also reviewed independently by 11 outside raters, who rated the difficulty for each subject on a scale of 1 (easy) to 7 (very difficult). There was significant agreement (Cronbach's alpha = 0.978) in the "ease" ratings. In comparing the ease ratings and retrieval times, an average ease rating <3 corresponded to a retrieval time <10 seconds. An "EASY10" benchmark, derived from these results, indicates that a life preserver retrieval time <10 seconds should be considered easy. Two of the configurations had average ratings <3. The installation features that distinguish the two configurations that passed the EASY10 benchmark, compared with the two that failed, were the position of the pull-strap, the pull-angle on the strap necessary to effect a quick opening of the life preserver container, and the position of the stowed life preserver relative to the front frame of the seat. The results indicate that the "easy reach" criteria should be sat.
Subject Airplanes -- Design and construction -- Human factors.
Airplanes -- Seats.
Aeronautics -- Safety measures.
Impact tests.
Human factors engineering.
Transport aircraft.
Life preservers.
Aircraft seats.
Test and evaluation.
Quick reaction.
Aerospace systems.
Information retrieval.
Civil affairs.
Video tapes.
Aeronautics -- Safety measures. (OCoLC)fst00798382
Airplanes -- Design and construction -- Human factors. (OCoLC)fst00803139
Airplanes -- Seats. (OCoLC)fst00803459
Transport Aircraft.
Human Factors Engineering & Man Machine System.
Added Author DeWeese, Rick.
United States. Office of Aerospace Medicine.
Civil Aerospace Medical Institute.
Standard No. DTICE ADA417209
Gpo Item No. 0431-E-04 (online)
Sudoc No. TD 4.210:03/9

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