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What alcohol concentration bars someone from acting as a remote pilot?

0.04 or greater.

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  1. 0.08 or greater
  2. 0.02 or greater
  3. 0.04 or greater ✔

Why: Under section 91.17, which Part 107 adopts, you may not act as a crewmember with an alcohol concentration of 0.04 or greater in blood or breath. That is half the common 0.08 driving limit.

Huh, didn't know that: Refusing a law enforcement alcohol test can lead to denial, suspension or revocation of a remote pilot certificate.

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References

Answer: 0.04 or greater. Under section 91.17, which Part 107 adopts, you may not act as a crewmember with an alcohol concentration of 0.04 or greater in blood or breath. That is half the common 0.08 driving limit.

  1. 14 CFR 91.17 Alcohol or drugs (eCFR) www.ecfr.gov/current/title-14/section-91.17
    While having an alcohol concentration of 0.04 or greater in a blood or breath specimen.
    Checked 2026-10-07.

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