FAA Aviation Mechanic General (AMG)Regulations, Records and Human FactorsMedium
A mechanic holds an Airframe rating only, without a Powerplant rating. According to 14 CFR 65.81, which action may this mechanic legally perform and approve for return to service?
- AA propeller governor replacement
- BAn engine mount inspection requiring powerplant sign-off
- CA structural repair to the fuselage skin
- DAn engine overhaul on a reciprocating engine
Show answer & explanationAnswer & explanation
Correct answer: C. A structural repair to the fuselage skin
Section 65.81 limits a mechanic's privileges to the ratings held. An Airframe-only mechanic may perform and approve maintenance on the airframe, such as fuselage skin repair, but may not approve powerplant-related work like engine overhauls, propeller components, or engine mounts.
Why the other options are wrong
- A. Propeller work requires Powerplant rating privileges.
- B. Engine mount sign-off requires Powerplant rating, not held here.
- D. Engine overhaul requires the Powerplant rating, which this mechanic lacks.
65.81 Privileges and Limitations
Defines that a mechanic may perform and approve for return to service only maintenance within the scope of the rating(s) held (Airframe and/or Powerplant).
- Airframe rating covers structure, flight controls, and related systems.
- Powerplant rating covers engines, propellers, and related accessories.
- A mechanic holding both ratings may work on both categories.
Memory trick: 'Airframe = skin, Powerplant = spin (engine/prop).'