Proving and Validation Tests

FAR 91.1041 Proving and Validation Tests

FAR 91.1041 sets proving and validation test rules for fractional ownership program managers, including 25-hour minimums, night, IFR, and en route requirements.

In Plain English

FAR 91.1041 governs how a fractional ownership program manager must prove and validate aircraft before placing them into service under Part 91 Subpart K.

Before operating either a two-pilot aircraft (non-turbojet) under VFR or any turbojet airplane, the program manager must complete at least 25 hours of proving tests acceptable to the Administrator. Those 25 hours must include:

  • 5 hours of night flight (if night ops will be authorized)
  • 5 instrument approaches under simulated or actual IMC (if IFR ops will be authorized)
  • Entry into a representative number of en route airports

During proving tests, no passengers may be carried except those needed for the test or designated FAA observers, though pilot training may occur.

Validation tests are separate and confirm the manager can operate safely and in compliance. They are required when adding a new aircraft type not previously proved, conducting operations outside U.S. airspace, Class II navigation, or special performance/operational authorizations. Actual flight may be waived if competence can be shown otherwise.

Proving and validation tests may run simultaneously, and the Administrator may grant deviations for special circumstances. This rule matters operationally because it ensures both the aircraft and the program manager are vetted before carrying owners or passengers.

Regulation Text
14 CFR § 91.1041
§ 91.1041 Aircraft proving and validation tests. (a) No program manager may permit the operation of an aircraft, other than a turbojet aircraft, for which two pilots are required by the type certification requirements of this chapter for operations under VFR, if it has not previously proved such an aircraft in operations under this part in at least 25 hours of proving tests acceptable to the Administrator including— (1) Five hours of night time, if night flights are to be authorized; (2) Five instrument approach procedures under simulated or actual conditions, if IFR flights are to be authorized; and (3) Entry into a representative number of en route airports as determined by the Administrator. (b) No program manager may permit the operation of a turbojet airplane if it has not previously proved a turbojet airplane in operations under this part in at least 25 hours of proving tests acceptable to the Administrator including— (1) Five hours of night time, if night flights are to be authorized; (2) Five instrument approach procedures under simulated or actual conditions, if IFR flights are to be authorized; and (3) Entry into a representative number of en route airports as determined by the Administrator. (c) No program manager may carry passengers in an aircraft during proving tests, except those needed to make the tests and those designated by the Administrator to observe the tests. However, pilot flight training may be conducted during the proving tests. (d) Validation testing is required to determine that a program manager is capable of conducting operations safely and in compliance with applicable regulatory standards. Validation tests are required for the following authorizations: (1) The addition of an aircraft for which two pilots are required for operations under VFR or a turbojet airplane, if that aircraft or an aircraft of the same make or similar design has not been previously proved or validated in operations under this part. (2) Operations outside U.S. airspace. (3) Class II navigation authorizations. (4) Special performance or operational authorizations. (e) Validation tests must be accomplished by test methods acceptable to the Administrator. Actual flights may not be required when an applicant can demonstrate competence and compliance with appropriate regulations without conducting a flight. (f) Proving tests and validation tests may be conducted simultaneously when appropriate. (g) The Administrator may authorize deviations from this section if the Administrator finds that special circumstances make full compliance with this section unnecessary.
Oral Exam Questions a DPE Might Ask
Q1Under Part 91 Subpart K, how many hours of proving tests are required before a program manager can operate a turbojet airplane?
Per FAR 91.1041(b), at least 25 hours of proving tests acceptable to the Administrator are required, including 5 hours of night time if night ops are authorized and 5 instrument approaches if IFR ops are authorized.
Q2Can passengers be carried during proving tests?
No. FAR 91.1041(c) prohibits carrying passengers during proving tests, except those needed to conduct the tests or FAA-designated observers. Pilot flight training, however, is permitted.
Q3When are validation tests required for a fractional ownership program manager?
FAR 91.1041(d) requires validation tests when adding a two-pilot or turbojet aircraft not previously proved, for operations outside U.S. airspace, for Class II navigation authorizations, and for special performance or operational authorizations.
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FAR 91.1041 — Aircraft Proving and Validation Tests