Mar 2017 · Ireland
Rescue helicopter crash: investigators link crew's hours awake to error risk and flag absent fatigue management
- Safety
A coast guard search-and-rescue helicopter flew into a rocky island off the west coast during a night support mission, killing all four crew. The final investigation report, while attributing the crash mainly to navigation database and organisational failings, found the crew's likely hours of wakefulness (about 17 to 18 hours) were associated with increased error rates and judgement lapses, that the monotonous mission raised the risk of fatigue, and that there was no formal fatigue risk management system - only a manual telling crews not to fly if fatigued, though people are poor judges of their own fatigue.
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