Which statement best describes Appendix A's role in Part 43?

Which statement best describes Appendix A's role in Part 43?

• A. It lists airframe alterations that are major alterations
• B. It lists minor alterations only
• C. It lists modifications not related to airframes
• D. It lists service bulletins

Answer: (A)

Appendix A to Part 43 identifies which airframe alterations are considered major. This matters because when an alteration on the airframe is on that list, it’s treated as a major alteration and must be done using FAA-approved data (or a field approval) and documented properly (often with Form 337) before the work is completed and the aircraft is returned to service. It isn’t about minor alterations, it isn’t about modifications not related to the airframe, and service bulletins are a separate type of information. So the best description is that Appendix A lists airframe alterations that are major.

Appendix A to Part 43 identifies which airframe alterations are considered major. This matters because when an alteration on the airframe is on that list, it’s treated as a major alteration and must be done using FAA-approved data (or a field approval) and documented properly (often with Form 337) before the work is completed and the aircraft is returned to service. It isn’t about minor alterations, it isn’t about modifications not related to the airframe, and service bulletins are a separate type of information. So the best description is that Appendix A lists airframe alterations that are major.