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Flight visibility observation point

Remote Pilot (Part 107) practice question 1 of 31 on Airspace / Operational Requirements. ACS element UA.II.B.K1 · difficulty: recall. Want to answer it in a timed quiz? Use the Remote Pilot (Part 107) practice mode.

Question bank updated 2026-09-22

QUESTIONUnder 14 CFR part 107, the minimum flight visibility must be determined as observed from what location?

  1. AThe position of the small unmanned aircraft in flight
  2. BThe location of the control station
  3. CThe nearest airport weather reporting station
Show the answer and explanation

Correct answer: B. The location of the control station

  • A — incorrect The regulation measures visibility from the control station on the ground, not from the aircraft's position aloft.
  • B — correct § 107.51(c) states that the minimum flight visibility, as observed from the location of the control station, must be no less than 3 statute miles.
  • C — incorrect Reported airport visibility is useful planning information, but § 107.51(c) requires the visibility to be observed from the control station itself.

BACKGROUND

Section 107.51 lists the operating limitations every remote pilot in command (RPIC) and person manipulating the flight controls must respect. Paragraph (c) sets the minimum flight visibility and specifies that it is observed from the location of the control station, the interface used by the remote pilot to control the aircraft. The regulation defines flight visibility as the average slant distance from the control station at which prominent unlighted objects can be seen and identified by day and prominent lighted objects by night. Because the remote pilot is on the ground, the observation point is where the pilot stands, not where the aircraft flies.

STUDY TIP

Remember that every part 107 visibility judgment is made from where the control station is, and learn the slant-distance definition alongside the 3-statute-mile number.

KEY POINTS

  • Flight visibility under § 107.51(c) is observed from the control station.
  • It is defined as an average slant distance to prominent objects.
  • Unlighted objects count by day, lighted objects by night.

SOURCES

  • 14 CFR 107.51(c)
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MORE ON AIRSPACE / OPERATIONAL REQUIREMENTS

SkyDrill is not affiliated with the FAA. This is an original practice item based on 14 CFR part 107, 14 CFR part 89, and the FAA Remote Pilot – Small UAS Study Guide (FAA-G-8082-22). Regulations and handbooks are revised; confirm details against the current edition.