What document must be referred to for guidance on inspection procedures?

The Federal Aviation Regulations (FAR) Part 43 is the primary source of regulatory guidance for maintenance, preventive maintenance, rebuilding, and alteration of aircraft, including powerplant inspections. This part of the regulations outlines the standards and procedures that must be followed for inspecting aircraft components.

Referencing FAR Part 43 is essential because it provides the legal framework and performance standards required for conducting inspections. This includes specifying the qualifications of individuals who may perform inspections and the requirements for recording the results of those inspections. Compliance with these regulations is mandatory for ensuring safety and airworthiness in aviation practices.

While other documents such as the Aircraft Operations Manual and Manufacturer's Manual may provide useful operational guidance and specific information about aircraft maintenance, they do not have the same regulatory standing or comprehensive coverage provided by FAR Part 43. Technical Service Bulletins can offer updates or recommendations but also lack the regulatory authority of FAR Part 43. Thus, for proper guidance on inspection procedures, referring to FAR Part 43 is crucial.