What is the maximum FDP for 4 sectors?

What is the maximum FDP for 4 sectors?

• A. 12 hours
• B. 11 hours
• C. 13 hours
• D. 14 hours

Answer: (A)

The length of a Flight Duty Period (FDP) is limited to manage fatigue risk, and regulators set the cap based on how many sectors are flown in that duty. When four sectors are involved, the allowable FDP is capped at twelve hours. This upper limit ensures pilots have enough rest opportunities after the duty and that fatigue does not accumulate across multiple segments. So from the start of the first departure to the end of the last arrival, the plan must not exceed twelve hours. Longer durations would push safety margins beyond what the fatigue rules allow, while eleven hours is simply shorter than the maximum.

The length of a Flight Duty Period (FDP) is limited to manage fatigue risk, and regulators set the cap based on how many sectors are flown in that duty. When four sectors are involved, the allowable FDP is capped at twelve hours. This upper limit ensures pilots have enough rest opportunities after the duty and that fatigue does not accumulate across multiple segments. So from the start of the first departure to the end of the last arrival, the plan must not exceed twelve hours. Longer durations would push safety margins beyond what the fatigue rules allow, while eleven hours is simply shorter than the maximum.