What is an activity an inspection authorization holder is NOT allowed to do?

An inspection authorization (IA) holder plays a crucial role in maintaining the safety and airworthiness of aircraft. While they possess the authority to perform significant actions related to inspections and maintenance, there are specific limitations on their responsibilities.

The correct choice highlights that an IA holder does not have the authority to approve data used for repairs to aircraft. This task typically falls under the jurisdiction of the FAA or requires data approved by the FAA, such as Technical Standard Orders (TSOs) or Supplemental Type Certificates (STCs). The approval process is designed to ensure that any data used for repairs meets the stringent safety and performance standards set by regulatory bodies.

In contrast, performing annual inspections, supervising inspections conducted by other mechanics, and returning an aircraft to service are all activities that an IA holder is permitted to undertake. This means they can evaluate the overall condition of the aircraft, ensure compliance with aviation regulations, and certify that maintenance has been performed satisfactorily.

Understanding these limitations helps clarify the IA holder's role within the aviation maintenance and inspection framework and emphasizes the importance of adhering to established safety protocols and regulatory standards.