Which document should be used if there are questions about the serviceable condition of aircraft components after repairs?

Using the manufacturer's maintenance instructions is essential for determining the serviceable condition of aircraft components after repairs. These instructions contain specific guidelines, procedures, and criteria established by the manufacturer that detail how components should be maintained, inspected, and evaluated for serviceability. They often include information on limits, tolerances, and recommended practices to ensure safety and compliance with the manufacturer's requirements.

Manufacturer’s maintenance instructions are tailored to specific aircraft and components, making them a valuable resource for maintaining safety and airworthiness. They provide detailed insight into the proper inspection and repair processes necessary to verify that a component can continue to function effectively after undergoing maintenance.

While the other documents mentioned may contain useful information, they do not provide the level of specificity and detail necessary for assessing serviceability post-repair. General standards found in 14 CFR may provide overarching regulations, the aircraft operations manual typically focuses on operation rather than maintenance, and FAA safety guidelines offer broad recommendations rather than component-specific instructions. Thus, for precise evaluations and compliance with manufacturer specifications, referring to the manufacturer's maintenance instructions is the most appropriate approach.