Where can you find a list of the basic items that must be inspected on a 100-Hour inspection?

• A. In the Airworthiness Directives Catalog.
• B. In 14 CFR Part 39.
• C. In 14 CFR Part 43, Appendix D.
• D. In the FAA Maintenance Manual.

Answer: (C)

The main concept is where the official checklist for a 100-hour inspection is defined. The standardized list of basic items that must be inspected at a 100-hour interval is provided in 14 CFR Part 43, Appendix D. This appendix lays out the specific items to inspect and the scope of the 100-hour (and annual) check so you can perform the inspection consistently and document it properly.

Airworthiness Directives Catalog contains mandatory actions related to specific aircraft or components but does not prescribe the general checklist for routine inspections. 14 CFR Part 39 governs the issuance and applicability of airworthiness directives, not the routine inspection items. The FAA Maintenance Manual may offer manufacturer-specific procedures, but the regulatory baseline for what must be inspected during a 100-hour inspection is defined in Part 43, Appendix D.