Which category of aircraft requires an inspection program under FAR 91 Subpart E?

• A. large airplanes and turbine-powered multi-engine airplanes operated under Part 91
• B. rotorcraft
• C. small airplanes
• D. general aviation airplanes

Answer: (A)

An inspection program is required for larger, more complex aircraft to systematically plan and document major checks beyond the standard annual or 100-hour inspections. Under FAR 91 Subpart E, large airplanes and turbine-powered multi-engine airplanes operated under Part 91 must have an FAA-approved inspection program that specifies when major inspections occur, what items are inspected, how the work is documented, and how airworthiness determinations are made. This ensures these high-capacity, high-risk airplanes remain airworthy through a formal, comprehensive maintenance plan.

Rotorcraft, small airplanes, and general aviation airplanes do not fall under this specific Subpart E requirement; they follow the standard maintenance rules and typical inspection intervals rather than an FAA-approved, site-wide inspection program. Thus, the category that requires an inspection program is large airplanes and turbine-powered multi-engine airplanes operated under Part 91.