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Naval aviation mishaps and fatigue.

M S Borowsky, R Wall

    Aviation, Space, and Environmental Medicine
    |June 1, 1983
    PubMed
    Summary

    Naval pilots working over 10 hours in 24 hours were more likely to be causally involved in aircraft mishaps. Circadian desynchronization may contribute to mishaps, with lower rates for flights between 0900 and 1800.

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    Area of Science:

    • Aerospace Medicine
    • Human Factors Engineering
    • Operational Psychology

    Background:

    • Fatigue and circadian rhythm disruption are potential risk factors in aviation accidents.
    • Understanding the relationship between operational demands and mishap liability is crucial for naval aviation safety.

    Purpose of the Study:

    • To investigate statistical relationships between fatigue-associated variables and naval aircraft mishap liability.
    • To identify operational factors contributing to pilots being causally involved in mishaps.

    Main Methods:

    • Analysis of naval aircraft mishap data, categorizing pilots into causally involved and not causally involved groups.
    • Statistical examination of variables including work hours, sleep, duty periods, missions flown, and time of departure.
    • Assessment of mishap rates in relation to flight departure times.

    Main Results:

    • Fighter and helicopter pilots working >= 10 hours in the preceding 24 hours were significantly more likely to be causally involved in mishaps.
    • No significant relationships were found between mishap liability and sleep, continuous duty, missions performed, or immediate past flight hours.
    • Mishap rates were lowest for flights departing between 0900 and 1800, suggesting a potential role for circadian desynchronization.

    Conclusions:

    • Extended work hours (>= 10 hours in 24) are a significant predictor of causal involvement in naval aircraft mishaps.
    • Circadian desynchronization, indicated by higher mishap rates outside typical working hours, may contribute to aviation incidents.
    • Targeted interventions focusing on work hour management and optimizing flight schedules may enhance naval aviation safety.

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