Which inspection is required for commercial operations or flight instruction?

• A. Annual inspection
• B. 60-hour inspection
• C. 100-hour inspection
• D. No inspection required

Answer: (C)

For aircraft used for hire or to provide flight instruction, a 100-hour inspection is required. This inspection must be performed at intervals of 100 hours of time in service, ensuring the airplane remains airworthy between the more general annual checks. The annual inspection is a separate requirement that applies to all aircraft, but it isn’t the specific interval tied to commercial or instructional use. The 60-hour inspection isn’t the standard requirement for this scenario, and saying no inspection is required is incorrect because commercial and instructional operations mandate the 100-hour inspection. In practice, the 100-hour inspection is often conducted around the same time as the annual when due.