Where should you find this entry? Removed right wing from aircraft and removed skin from outer 6 feet. Repaired buckled spar 49 inches from tip in accordance with figure 8 in the manufacturer's structural repair manual No. 28-1.

Where should you find this entry? Removed right wing from aircraft and removed skin from outer 6 feet. Repaired buckled spar 49 inches from tip in accordance with figure 8 in the manufacturer's structural repair manual No. 28-1.

• A. Airworthiness Directive
• B. Maintenance Manual
• C. FAA Form 337
• D. Certificate of Airworthiness

Answer: (C)

Major repairs and alterations to an aircraft must be documented on FAA Form 337. In this case, removing the right wing, stripping outer skin, and repairing a buckled spar 49 inches from the tip, all done in accordance with the manufacturer’s structural repair manual, constitute a significant structural repair/alteration. The Form 337 is the official record that describes what was done, where it was done, and the methods or data used (such as the figure from the repair manual), and it is the document filed with the FAA to update the aircraft’s airworthiness records. This is why it’s the best choice for the required entry. Airworthiness Directives are regulatory actions that apply to fleets or specific conditions and are not used to log a single repair. The maintenance manual provides the procedures and data for performing the work, but it isn’t the formal entry filed for FAA approval. The Certificate of Airworthiness is the certificate of current airworthiness itself, not a log of maintenance entries.

Major repairs and alterations to an aircraft must be documented on FAA Form 337. In this case, removing the right wing, stripping outer skin, and repairing a buckled spar 49 inches from the tip, all done in accordance with the manufacturer’s structural repair manual, constitute a significant structural repair/alteration. The Form 337 is the official record that describes what was done, where it was done, and the methods or data used (such as the figure from the repair manual), and it is the document filed with the FAA to update the aircraft’s airworthiness records. This is why it’s the best choice for the required entry.

Airworthiness Directives are regulatory actions that apply to fleets or specific conditions and are not used to log a single repair. The maintenance manual provides the procedures and data for performing the work, but it isn’t the formal entry filed for FAA approval. The Certificate of Airworthiness is the certificate of current airworthiness itself, not a log of maintenance entries.