What is the maximum flight time that an aircrew member could be scheduled between periods of crew rest?

What is the maximum flight time that an aircrew member could be scheduled between periods of crew rest?

• A. 11 hours
• B. 7 hours
• C. 13 hours
• D. 9 hours

Answer: (D)

The idea being tested is fatigue management: how long a crew member can fly before needing a rest to recover. The maximum flight time between periods of crew rest is nine hours. This limit is set to ensure there’s enough opportunity for sleep and recovery, keeping alertness and performance reliable for the next duties. If flight time approached or exceeded nine hours without rest, fatigue risk increases, so scheduling rules cap it at nine hours to balance mission needs with safety. The other numbers would either compress rest opportunities too much or allow too long a stretch of flight, both of which can undermine safety and performance.

The idea being tested is fatigue management: how long a crew member can fly before needing a rest to recover. The maximum flight time between periods of crew rest is nine hours. This limit is set to ensure there’s enough opportunity for sleep and recovery, keeping alertness and performance reliable for the next duties. If flight time approached or exceeded nine hours without rest, fatigue risk increases, so scheduling rules cap it at nine hours to balance mission needs with safety. The other numbers would either compress rest opportunities too much or allow too long a stretch of flight, both of which can undermine safety and performance.