Which regulation of the FAA pertains to maintenance work?

The regulation of the FAA that pertains to maintenance work is indeed Part 43. This part specifically outlines the rules and requirements for maintenance, preventive maintenance, rebuilding, and alteration of aircraft. It establishes the standards to ensure that aircraft are maintained in a safe and airworthy condition.

Part 43 details who is authorized to perform maintenance and the types of maintenance that are required to be documented. It also sets forth the recommended practices for performing maintenance and the necessary inspections that need to be conducted.

Other parts, such as Part 5 and Part 14, primarily focus on operational safety management systems and specific aviation regulations, while Part 145 covers the regulations that apply to repair stations. These are important for understanding the broader regulatory framework but are not directly centered on maintenance work like Part 43 is. Thus, Part 43 is essential for anyone involved in aircraft maintenance as it governs the critical aspects of maintaining airplane safety and compliance.