What document is required if a significant repair affecting flight characteristics has been made?

When a significant repair that affects flight characteristics is made to an aircraft, filing FAA Form 337 is required. This form serves as the official documentation for reporting alterations or repairs to the aircraft that may impact its safety, performance, or compliance with regulatory standards. It provides a way for the FAA to track and maintain a history of modifications to aircraft, ensuring that they are properly documented and approved.

The use of Form 337 is critical because it notifies the FAA of the changes made and establishes a record of compliance with regulations concerning airworthiness. This process helps maintain safety standards in aviation by ensuring repairs are adequately inspected and approved.

The other documents mentioned do not fulfill the same purpose. The pilot operating handbook provides operational guidelines but does not document repairs. The maintenance record history is essential for keeping track of overall maintenance but is not specifically required after a significant repair. A supplemental light test report may relate to specific equipment or systems but is not a general requirement for repairs affecting flight characteristics.