Which part of 14 CFR outlines the standards of performance for inspection authorization holders?

The correct answer is 14 CFR Part 43, which establishes the regulations for the maintenance, preventive maintenance, rebuilding, and alteration of aircraft, as well as standards applicable to inspection authorization holders. Part 43 specifically details the requirements for the documentation, procedures, and standards that must be met during inspections, ensuring consistent and safe practices across the aviation industry.

Inspection authorization holders must adhere to the standards outlined in this part to maintain their qualifications and perform inspections on specific types of maintenance work. This includes meeting qualifications, performing necessary inspections, and ensuring compliance with regulatory standards, which ultimately contribute to the safety and airworthiness of aircraft.

In contrast, 14 CFR Part 61 primarily deals with certification of pilots and flight instructors, including training requirements, which is unrelated to the standards for inspection authorization. Part 135 pertains to the operating requirements for commuter and on-demand operations, while Part 145 covers repair stations and their certification standards, but neither addresses inspection authorization standards directly. Thus, Part 43 is the pertinent regulation for inspection performance standards.