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Persons bound by the § 107.51 operating limitations

Remote Pilot (Part 107) practice question 21 of 34 on Regulations / Operating Rules. ACS element UA.I.B.K21b · 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 § 107.51, the operating limitations on groundspeed, altitude, visibility, and cloud clearance must be complied with by

  1. Athe remote pilot in command only, since the person on the controls is supervised
  2. Bthe visual observer, who must report any exceedance
  3. Cthe remote pilot in command and the person manipulating the flight controls
Show the answer and explanation

Correct answer: C. the remote pilot in command and the person manipulating the flight controls

  • A — incorrect § 107.51 names the person manipulating the flight controls alongside the remote pilot in command. Supervision does not remove that person's obligation.
  • B — incorrect The visual observer is not named in § 107.51. The section places the obligation on the remote PIC and the person manipulating the flight controls.
  • C — correct The opening sentence of § 107.51 states that a remote pilot in command and the person manipulating the flight controls must comply with all of the listed operating limitations.

BACKGROUND

Section 107.51 lists the four core operating limitations for a small unmanned aircraft: a groundspeed of no more than 87 knots (100 miles per hour), an altitude of no more than 400 feet above ground level except near a structure, a minimum flight visibility of 3 statute miles observed from the control station, and cloud clearance of at least 500 feet below and 2,000 feet horizontally. The introductory sentence identifies who must comply: a remote pilot in command (remote PIC) and the person manipulating the flight controls of the small unmanned aircraft system. This mirrors § 107.12, under which a non-certificated person may fly only under the remote PIC's direct supervision; both individuals remain bound by the limits.

STUDY TIP

When a stem asks who must comply with an operating rule, check whether the section names the remote PIC alone or also the person on the controls; § 107.51 names both.

KEY POINTS

  • § 107.51 binds the remote PIC and the person manipulating the flight controls.
  • The four limits are groundspeed, altitude, flight visibility, and cloud clearance.
  • The visual observer is not named in § 107.51.

SOURCES

  • 14 CFR 107.51, introductory text
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MORE ON REGULATIONS / OPERATING RULES

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.