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Aeromedical factorsQuestion 740 of 934

What rule of thumb does the AIM give for the time between drinking alcohol and flying?

  1. At least 3 to 4 hours
  2. At least 6 to 8 hours
  3. At least 12 to 24 hours
  4. At least 48 to 72 hours
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Correct answer: At least 12 to 24 hours

A pilot can still be impaired 8 hours after a moderate amount of alcohol. The AIM suggests 12 to 24 hours.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 8-1-1 Fitness for Flight, page 640

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Questions last reviewed: 18 October 2026