Which regulation section outlines requirements for aircraft maintenance?

The regulation that outlines requirements for aircraft maintenance is 14 CFR Part 43. This part details the rules and standards applicable to the maintenance, preventive maintenance, rebuilding, and alteration of aircraft. It specifies who is authorized to perform maintenance work, the types of maintenance that can be conducted, the record-keeping requirements, and the necessary training or certification for personnel involved in these activities.

Understanding this section is crucial for ensuring that all maintenance practices are compliant with federal regulations, thereby enhancing safety and airworthiness of aircraft. Knowledge of 14 CFR Part 43 is essential for aviation professionals, as it sets the foundation for maintaining aircraft effectively and legally.

The other options relate to different aspects of aviation regulation: Part 21 pertains to the certification of aircraft and aircraft parts, Part 90 covers the general operating and flight rules for air carriers, and Part 145 addresses repair stations, which is more about the certification of organizations that perform maintenance rather than the maintenance requirements themselves.