What is the minimum rest period required before any FDP if the previous DP is greater than 12 hours?

What is the minimum rest period required before any FDP if the previous DP is greater than 12 hours?

• A. 6 hours
• B. 12 hours
• C. 18 hours
• D. 24 hours

Answer: (B)

The key idea here is fatigue management through a fixed minimum rest between duties. When the preceding duty period is longer than 12 hours, the rule requires a minimum rest period of 12 hours before starting any flight duty again. This provides a reliable recovery window after a lengthy DP, helping ensure the crew isn’t starting a new FDP with insufficient rest. Resting less than this 12-hour minimum (for example six hours) would not give enough recovery after a long DP, while longer rests (18 or 24 hours) are not required by this specific rule, though they might occur in other circumstances or fatigue-management plans.

The key idea here is fatigue management through a fixed minimum rest between duties. When the preceding duty period is longer than 12 hours, the rule requires a minimum rest period of 12 hours before starting any flight duty again. This provides a reliable recovery window after a lengthy DP, helping ensure the crew isn’t starting a new FDP with insufficient rest. Resting less than this 12-hour minimum (for example six hours) would not give enough recovery after a long DP, while longer rests (18 or 24 hours) are not required by this specific rule, though they might occur in other circumstances or fatigue-management plans.