[abstract] DECOMPRESSION LIMITS IN COMMERCIAL AIRCRAFT CABINS WITH FORCED DESCENT.

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[abstract] DECOMPRESSION LIMITS IN COMMERCIAL AIRCRAFT CABINS WITH FORCED DESCENT.

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dc.contributor.author Powell, MR en_US
dc.date.accessioned 2006-08-21T03:27:28Z
dc.date.available 2006-08-21T03:27:28Z
dc.date.issued 2002 en_US
dc.identifier.other Undersea Hyp Med 2002 en_US
dc.identifier.uri http://archive.rubicon-foundation.org/1181
dc.description Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org ) en_US
dc.description.abstract INTRODUCTION: Current limitations on commercial aircraft specify that, in the event of decompression, cabin altitudes shall never exceed 40,000 ft nor be above 25,000 ft for more than two minutes. An uncontained engine rotor failure would be the worst-case scenario with the largest hole formed in the pressurized cabin wall. With current performance characteristics of commercial aircraft, it is doubtful if the current FAA requirement could be met. The requirement is based on time of useful consciousness. If the requirement is to be modified, can the exposure duration be lengthened to correspond to time to decompression illness (DCI) METHODS: Data from NASA JSC decompression studies was surveyed for those exposures in the range of interest. The value for the shortest and highest exposure was taken as the Armstrong Limit (63,000 ft). The larger figure at the right shows the regression line resulting from the NASA data that includes both time to pain-only DCS and to Grade III and IV precordial Doppler bubbles. RESULTS: The small insert shows the range of time intervals and altitudes for this study. At 40,000 ft, the duration to DCI would be five minutes and during this period, an aircraft could descend at 3,000 ft/min to 25,000 ft. CONCLUSIONS: Even at this slow rate of descent, DCI would be avoided in most, if not all, passengers. While problems of hypoxia could present, reconsciousness would be regained at the lower altitude. DCI, aircraft, forced descent, FAA guidelines, altitude, en_US
dc.language.iso en_US
dc.rights Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org ) en_US
dc.subject altitude en_US
dc.subject Decompression Sickness en_US
dc.subject FAA guidelines en_US
dc.subject hypoxia en_US
dc.title [abstract] DECOMPRESSION LIMITS IN COMMERCIAL AIRCRAFT CABINS WITH FORCED DESCENT. en_US

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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