If an alteration is listed in FAA aircraft specifications for the aircraft, how is it treated for return to service?

If an alteration is listed in FAA aircraft specifications for the aircraft, how is it treated for return to service?

• A. Major alteration
• B. Minor alteration
• C. Major repair
• D. Minor repair

Answer: (B)

When an alteration is listed in the aircraft’s specifications, it is already approved as part of the aircraft’s design. That makes it a minor alteration for return to service. It can be installed and returned to service under the approved data without needing an FAA Form 337, as long as the installation follows the specified design data and proper maintenance documentation is completed. The airworthiness release can be given after the work is inspected and signed off by the appropriate authorized person. If the modification were not in the design data or would significantly affect weight, balance, strength, or performance, it would be treated as a major alteration and would require FAA approval (often via Form 337).

When an alteration is listed in the aircraft’s specifications, it is already approved as part of the aircraft’s design. That makes it a minor alteration for return to service. It can be installed and returned to service under the approved data without needing an FAA Form 337, as long as the installation follows the specified design data and proper maintenance documentation is completed. The airworthiness release can be given after the work is inspected and signed off by the appropriate authorized person. If the modification were not in the design data or would significantly affect weight, balance, strength, or performance, it would be treated as a major alteration and would require FAA approval (often via Form 337).