14 C.F.R. § 91.1099 Crewmember initial and recurrent training requirements.
Title 14 - Aeronautics and Space
No program manager may use a person, nor may any person serve, as a crewmember in operations under this subpart unless that crewmember has completed the appropriate initial or recurrent training phase of the training program appropriate to the type of operation in which the crewmember is to serve since the beginning of the 12th month before that service.
Title 14: Aeronautics and Space
PART 91—GENERAL OPERATING AND FLIGHT RULES
Subpart K—Fractional Ownership Operations
Program Management
§ 91.1099 Crewmember initial and recurrent training requirements.