What requires a statement for return to service from a repair station that performed a major repair?

A maintenance release is a document that indicates the work performed, including any major repairs and alterations on an aircraft or its components. When a repair station completes a major repair, they are required to issue a maintenance release that confirms the aircraft is safe for return to service following this significant work.

The maintenance release includes pertinent details about the repair performed and reassures that it meets all regulatory and safety standards. This documentation is crucial for maintaining the airworthiness of the aircraft and ensures transparency in maintenance practices.

While Form 337 serves a necessary purpose in documenting major repairs or alterations and submitting that information to the FAA, a maintenance release is specifically focused on the return to service aspect, making it the direct requirement in this scenario. Therefore, the correct choice recognizes the specific need for a maintenance release following a major repair.