What is required before a holder of an inspection authorization can approve a major repair for return to service?

In order for a holder of an inspection authorization to approve a major repair for return to service, the requirement is that the repair must have been performed in accordance with technical data that has been approved by the Administrator. This ensures that the repair meets all necessary regulatory standards and safety considerations, which is essential for maintaining the integrity and airworthiness of the aircraft.

Approved technical data serves as a guideline that includes all the necessary specifications, procedures, and materials required to effectively conduct the repair, minimizing the potential for any issues post-repair. It reflects the best practices and ensures compliance with FAA regulations, which is crucial for both operational safety and legal accountability in aviation maintenance.

While performing or supervising a similar repair can be beneficial for the repairman’s expertise and the technician’s qualifications are important, this is secondary to the requirement of adhering to approved technical data. Similarly, while it is favorable for the repair to align with manufacturer specifications, it is the FAA-approved data that is paramount. Additionally, a certificated mechanic's involvement in a repair does not inherently provide the authorization needed for the major repair’s approval; this responsibility lies with the inspection authorization holder who ensures compliance with the regulatory framework.