FAA Airline Transport Pilot (ATM)Regulations (14 CFR 117/121/61)Hard
A Part 121 flight crew member has just completed a flight duty period (FDP) and is now in a required rest period. An unforeseen operational circumstance arises, and the certificate holder needs this flight crew member to report for a new FDP early. Under 14 CFR Part 117.21(c), what is the minimum duration the flight crew member's subsequent rest period must be if the current rest period is interrupted?
- A10 consecutive hours
- B16 consecutive hours
- C8 consecutive hours
- D12 consecutive hours
Show answer & explanationAnswer & explanation
Correct answer: A. 10 consecutive hours
14 CFR Part 117.21(c) states that if a flight crew member's rest period is interrupted for an unforeseen operational circumstance, the subsequent rest period must be at least 10 consecutive hours. This ensures adequate time for rest after the interruption.
Why the other options are wrong
- B. This is incorrect; 16 hours is not the specified minimum for an interrupted rest period.
- C. This is incorrect; 8 hours is not the specified minimum for an interrupted rest period.
- D. This is incorrect; 12 hours is not the specified minimum for an interrupted rest period.
117.21(c) Interrupted Rest Period
14 CFR 117.21(c) addresses situations where a flight crew member's required rest period is interrupted due to unforeseen operational circumstances. In such cases, the subsequent rest period must be at least 10 consecutive hours to ensure proper recovery from the interruption and the previous FDP.
- Applies to unforeseen operational circumstances.
- Rest period must be 'interrupted', not just shortened.
- Subsequent rest period must be at least 10 consecutive hours.
- Ensures adequate recuperation after disruption.
Memory trick: Rest interrupted? Ten hours, then you're re-started!