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Power check in the preflight assessment

Remote Pilot (Part 107) practice question 10 of 34 on Regulations / Operating Rules. ACS element UA.I.B.K21a · 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 § 107.49, before flying a powered small unmanned aircraft, what must the remote pilot in command ensure about the available power?

  1. AIt is at least 50 percent above the expected flight time
  2. BIt is enough for the intended operational time
  3. CIt is enough to reach 400 feet AGL and return twice
Show the answer and explanation

Correct answer: B. It is enough for the intended operational time

  • A — incorrect Part 107 sets no percentage margin; § 107.49(d) requires only enough power for the intended operational time.
  • B — correct § 107.49(d) requires the remote pilot in command, if the small unmanned aircraft is powered, to ensure there is enough available power for the system to operate for the intended operational time.
  • C — incorrect § 107.49(d) does not describe a climb-and-return test; the standard is the intended operational time.

BACKGROUND

Section 107.49 of 14 CFR part 107 lists the preflight familiarization, inspection, and actions required of the remote pilot in command. The pilot must assess the operating environment, including local weather, local airspace and flight restrictions, the location of persons and property on the surface, and other ground hazards. The pilot must brief all direct participants, ensure all control links between the ground control station and the aircraft are working, ensure a powered aircraft has enough available power for the intended operational time, and ensure any attached or carried object is secure and does not adversely affect flight characteristics or controllability. If the flight will be over people under subpart D, the pilot must also confirm the aircraft meets the applicable category requirements.

STUDY TIP

Learn § 107.49 as a checklist of six items; the power item is phrased in terms of the intended operational time, not a numeric reserve.

KEY POINTS

  • § 107.49(d): a powered sUAS must have enough available power for the intended operational time.
  • The preflight assessment also covers weather, airspace, persons and property on the surface, and ground hazards.
  • Control links must be working and any carried object must be secure.

SOURCES

  • 14 CFR 107.49(d)
Practice the Remote Pilot (Part 107) test →Timed 60-question exam, by ACS area, or review your misses. Free.
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.