Aircraft proving and validation tests

This regulation requires program managers under Part 91 Subpart K (fractional ownership programs) to conduct proving and validation tests before operating certain aircraft types.

Proving tests require at least 25 hours of FAA-approved flights for:

• Non-turbojet aircraft requiring two pilots under VFR
• All turbojet aircraft

These tests must include five hours at night (if night operations are planned), five instrument approaches (if IFR operations are planned), and visits to a representative number of airports. No passengers are allowed except those necessary for testing and FAA observers, though pilot training may occur simultaneously.

Validation tests verify the program manager can safely conduct specific operations, required when adding new aircraft types not previously operated under this subpart, or when seeking authorization for international operations, Class II navigation, or special performance operations.

The FAA may approve alternative test methods and can waive requirements when full compliance isn't necessary.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*