Personnel are restricted from performing aircraft maintenance or any aircraft maintenance related activities for ____ after last alcohol use.

• A. 8 hours
• B. 10 hours
• C. 12 hours
• D. 24 hours

Answer: (B)

Alcohol use can leave you impaired in judgment, coordination, and reaction time, all of which are crucial for safe aircraft maintenance. The ten-hour window after the last drink provides a safety margin long enough for most people to metabolize enough alcohol so these effects diminish, while not imposing an excessively long delay on work. Eight hours is a shorter safety buffer and can still leave some individuals impaired; twelve or twenty-four hours would be overly restrictive for routine maintenance tasks. Remember that metabolism varies with factors like body weight, amount and type of alcohol, food intake, and fatigue, so if there’s any doubt, it’s safer to wait longer or seek guidance.