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Applicability of AC 43.13 data

Aviation Mechanic General (AMG) practice question 12 of 37 on Regulations, Maintenance Forms, Records, and Publications. ACS element AM.I.I.K16 · difficulty: recall. Want to answer it in a timed quiz? Use the Aviation Mechanic General (AMG) practice mode.

Question bank updated 2026-09-22

QUESTIONAC 43.13-1 and AC 43.13-2 contain methods, techniques, and practices acceptable to the Administrator. According to the handbook, to which aircraft does that data apply?

  1. AAny area of civil aircraft with a maximum certificated takeoff weight over 12,500 pounds
  2. BNon-pressurized areas of civil aircraft of 12,500 pounds gross weight or less
  3. COnly aircraft operated under part 121 or 135 with a continuous airworthiness program
Show the answer and explanation

Correct answer: B. Non-pressurized areas of civil aircraft of 12,500 pounds gross weight or less

  • A — incorrect The ACs are limited to aircraft of 12,500 pounds or less, not aircraft above that weight.
  • B — correct The handbook states that these ACs apply to non-pressurized areas of civil aircraft weighing 12,500 pounds gross weight or less.
  • C — incorrect Air carriers with continuous airworthiness programs use their own operations-specification maintenance manuals under § 43.13(c); the ACs are not limited to them.

BACKGROUND

When a manufacturer's maintenance manual or Instructions for Continued Airworthiness (ICA) do not provide the guidance a technician needs, 14 CFR § 43.13(a) permits other methods, techniques, and practices acceptable to the Administrator. The Aviation Maintenance Technician Handbook–General identifies Advisory Circular (AC) 43.13-1 and AC 43.13-2 as containing examples of such acceptable practices. The handbook notes that these ACs specifically state that their information applies to non-pressurized areas of civil aircraft weighing 12,500 pounds gross weight or less. The reproduced cover of AC 43.13-2B confirms that scope for inspection and alteration and adds that the alteration data may serve as approved data for major alterations when the AC chapter, page, and paragraph are listed in block 8 of FAA Form 337 and the user has determined the data is appropriate, directly applicable, and not contrary to manufacturer's data.

STUDY TIP

Attach two limits to AC 43.13: non-pressurized areas and 12,500 pounds gross weight or less.

KEY POINTS

  • AC 43.13-1 and 43.13-2 give methods, techniques, and practices acceptable to the Administrator.
  • They apply to non-pressurized areas of civil aircraft of 12,500 pounds gross weight or less.
  • They fill gaps when the manufacturer's manual or ICA does not provide guidance.

SOURCES

  • FAA-H-8083-30B ch02 "Section 43.13--Performance Rules (General)"
  • FAA-H-8083-30B ch02 Figure 2-9, AC 43.13-2B excerpt, paragraph 1
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SkyDrill is not affiliated with the FAA. This is an original practice item based on FAA-H-8083-30B Aviation Maintenance Technician Handbook – General, 14 CFR part 43 and part 65. Regulations and handbooks are revised; confirm details against the current edition.