What is the flight duty limit for operations in the 168-hour window?

• A. 50 hours
• B. 60 hours
• C. 70 hours
• D. 65 hours

Answer: (B)

In fatigue management, there’s a cap on how much flight time a crew can accumulate within a rolling 168-hour (7-day) window. The limit for that period is 60 hours of flight time. This ensures crews have adequate rest over a week, supporting safe operations. The 7-day window is rolling, so any sequence of seven consecutive days is checked, not just a calendar week. That’s why 60 hours is the standard limit: it balances productivity with safety. Numbers like 50 hours would be a stricter cap, while 65 or 70 hours would exceed the allowed maximum in this window.