What is the flight time limit past 672 hours?

• A. 100 hours
• B. 90 hours
• C. 110 hours
• D. 120 hours

Answer: (A)

A rolling 28-day period (672 hours) is used to limit how much flight time a pilot can accumulate, preventing fatigue from sustained flying. The limit within any such consecutive 28-day window is 100 hours of flight time. So, when you consider this 672-hour span, the cap you apply is 100 hours, and as days pass, the window slides so you can accumulate more only up to that 100-hour limit in the current 28-day period. The other totals don’t fit because they exceed or don’t reach the regulatory cap of 100 hours within the 28-day window.