A flight crew member shall not fly as a crew member more than _____ hours during any 30 consecutive days.

• A. 100 hours
• B. 125 hours
• C. 150 hours
• D. 180 hours

Answer: (B)

The main idea is fatigue management through a monthly flight-time limit. In a rolling 30‑day period, a flight crew member may not accumulate more than 125 hours of flight time. This cap is set to prevent excessive workloads over a month and to ensure adequate rest opportunities across the entire period, rather than focusing only on a single week. The 125‑hour figure sits between tighter short-window limits and longer-term allowances, balancing operational needs with safety.

The other numbers don’t fit because 100 hours is tied to a 28‑day window under a different rule, and 150 or 180 hours would exceed what’s considered safe for a typical 30‑day period, undermining fatigue protections.