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Fatigue management in aviation

Aviation is internationally regulated for fatigue because of the safety-critical nature of flight operations. In the UK, the Civil Aviation Authority (CAA) oversees operator compliance with applicable flight time limitations and fatigue management requirements.

EU-retained and UK aviation rules define flight duty periods, rest requirements, and related limits for many commercial operations. Operators may also implement a fatigue risk management system (FRMS) as a structured approach to managing fatigue beyond prescriptive limits — subject to regulatory approval processes where applicable.

This page does not summarise specific CAA approvals or operator certificates. Consult official CAA publications and your organisation’s approved manuals for authoritative requirements.

Fatigue in aviation can arise from:

  • Time zone crossings and night departures
  • Early report times and extended duty sequences
  • Commuting to dispersed crew bases
  • Disruption, diversions, and standby duties

Principles from shift work fatigue and night shift fatigue apply, adapted to aviation-specific duty structures.

CAA CAP documents, EASA FTL provisions, and operator FRMS documentation will be linked with appropriate caveats in a future revision.