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What is the minimum time that must elapse between consuming alcohol and acting as a crewmember?

Choices

✓ 8 hourscorrect
The "bottle to throttle" rule requires at least 8 hours after consuming alcohol.
4 hours
Four hours is less than the required minimum.
12 hours
While a wider margin is wise, the regulatory minimum is 8 hours.
24 hours
The regulatory minimum is 8 hours, not 24.

Why

A person may not act as a crewmember within 8 hours of consuming alcohol, while under the influence, or with a blood alcohol concentration of 0.04 percent or greater.

FAA source: 14 CFR 91.17browse the reference library →

This is taught in Operating Rules: Right of Way, Alcohol and PIC Authority — study the lessons free, then practice with grading and mastery tracking.

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Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question. Reviewed by a panel of three CFIs + AI review.