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Qualifications of a person maintaining a Category 4 aircraft

Remote Pilot (Part 107) practice question 9 of 17 on Operations / Maintenance and Inspection. ACS element UA.V.F.K4 · 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 § 107.140(c)(1), a person performing maintenance on a small unmanned aircraft used in Category 4 operations must have which of the following?

  1. AThe knowledge, skill, and appropriate equipment to perform the work
  2. BA remote pilot certificate with a small UAS rating and a current flight review
  3. CWritten authorization from the manufacturer for each maintenance task
Show the answer and explanation

Correct answer: A. The knowledge, skill, and appropriate equipment to perform the work

  • A — correct § 107.140(c)(1)(ii) requires the person performing maintenance to have the knowledge, skill, and appropriate equipment to perform the work.
  • B — incorrect § 107.140(c)(1) sets no pilot-certificate or flight-review requirement for maintenance personnel; a flight review appears in part 107 only as part of the alternate qualification path for part 61 pilots seeking a remote pilot certificate.
  • C — incorrect The rule requires use of the manufacturer's methods and practices, not written authorization for each task.

BACKGROUND

Category 4 operations over human beings use a small unmanned aircraft that holds an airworthiness certificate issued under part 21. Section 107.140(c) sets the maintenance requirements for these aircraft. The owner (or an operator under agreement with the owner) must ensure that the person performing any maintenance, preventive maintenance, alterations or inspections uses the methods in the manufacturer's current maintenance manual or Instructions for Continued Airworthiness, has the knowledge, skill and appropriate equipment to perform the work, inspects the aircraft per the manufacturer's instructions, and uses parts of a quality that keeps the aircraft at least equal to its original or properly altered condition. Compliance with part 43 and part 91 subpart E also fulfills these requirements.

STUDY TIP

Category 4 is the only part 107 category with explicit maintenance-personnel requirements; the other categories rely on the general condition-for-safe-operation rule.

KEY POINTS

  • § 107.140(c)(1) governs who may maintain a Category 4 small unmanned aircraft.
  • The person must have the knowledge, skill and appropriate equipment for the work.
  • Manufacturer methods and quality parts are also required.

SOURCES

  • 14 CFR 107.140(c)(1)(ii)
Practice the Remote Pilot (Part 107) test →Timed 60-question exam, by ACS area, or review your misses. Free.
MORE ON OPERATIONS / MAINTENANCE AND INSPECTION

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.