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What minimum flight visibility does Part 107 require, as seen from the control station?

3 statute miles.

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  1. 1 statute mile
  2. 5 statute miles
  3. 3 statute miles ✔

Why: Flight visibility observed from the control station must be at least 3 statute miles. If haze, fog or smoke cuts it below that, the flight cannot go.

Huh, didn't know that: Part 107 defines flight visibility as the average slant distance at which prominent objects can be seen and identified.

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I asked my drone why it would not fly in the fog. It said it just could not see the point.
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References

Answer: 3 statute miles. Flight visibility observed from the control station must be at least 3 statute miles. If haze, fog or smoke cuts it below that, the flight cannot go.

  1. 14 CFR 107.51 Operating limitations (eCFR) www.ecfr.gov/current/title-14/section-107.51
    The minimum flight visibility, as observed from the location of the control station must be no less than 3 statute miles.
    Checked 2026-10-07.

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