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Hypoxia: USAF experience 1970-1980.

R B Rayman, G B McNaughton

    Aviation, Space, and Environmental Medicine
    |April 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    US Air Force aircrew experienced in-flight hypoxia due to oxygen system malfunctions or poor discipline. Preflight checks of the oxygen system can significantly reduce the risk of hypoxia incidents.

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    Area of Science:

    • Aviation Safety
    • Aerospace Medicine
    • Physiology

    Background:

    • In-flight hypoxia poses a significant risk to aircrew, potentially causing incapacitating symptoms.
    • Hypoxia incidents in USAF aircrew occurred between 1970-80, highlighting a persistent safety concern.

    Purpose of the Study:

    • To analyze the causes and consequences of in-flight hypoxia incidents among USAF aircrew.
    • To identify preventative measures for reducing hypoxia risks in aviation.

    Main Methods:

    • Review of reported in-flight hypoxia incidents among 298 USAF aircrewmen from 1970-80.
    • Analysis of incident causes, including oxygen system malfunctions and aircrew behavior.

    Main Results:

    • 298 USAF aircrewmen reported in-flight hypoxia during the study period.

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  • Primary causes included cockpit/cabin depressurization and oxygen system failures.
  • Poor oxygen discipline was also identified as a contributing factor.

    • Conclusions:

    • While no accidents occurred, hypoxia symptoms were often incapacitating.
    • Thorough preflight inspections of oxygen masks, hoses, and connections are crucial.
    • Implementing a PRICE check procedure can substantially mitigate the risk of in-flight hypoxia.