A crew member must not consume alcohol how many hours before reporting for duty?

A crew member must not consume alcohol how many hours before reporting for duty?

• A. 12 hours
• B. 24 hours
• C. 6 hours
• D. 0 hours

Answer: (A)

Alcohol affects judgment, reaction time, memory, and coordination—abilities you rely on for safe flying. To keep you ready for duty, a window is required before reporting for work to ensure any alcohol is mostly out of your system. Twelve hours provides a practical safety buffer: most people will have metabolized enough alcohol by then that impairment is unlikely when you begin your shift, even though individual metabolism varies. A longer window (like twenty-four hours) is more conservative but not necessary for standard BI practice, while a shorter window (six hours) or drinking right before duty could still leave you impaired. So, you must not consume alcohol for twelve hours before reporting for duty.

Alcohol affects judgment, reaction time, memory, and coordination—abilities you rely on for safe flying. To keep you ready for duty, a window is required before reporting for work to ensure any alcohol is mostly out of your system. Twelve hours provides a practical safety buffer: most people will have metabolized enough alcohol by then that impairment is unlikely when you begin your shift, even though individual metabolism varies. A longer window (like twenty-four hours) is more conservative but not necessary for standard BI practice, while a shorter window (six hours) or drinking right before duty could still leave you impaired. So, you must not consume alcohol for twelve hours before reporting for duty.