14 C.F.R. § 91.5 Pilot in command of aircraft requiring more than one required pilot.
Title 14 - Aeronautics and Space
No person may operate an aircraft that is type certificated for more than one required pilot flight crewmember unless the pilot in command meets the requirements of §61.58 of this chapter.
Title 14: Aeronautics and Space
PART 91—GENERAL OPERATING AND FLIGHT RULES
Subpart A—General
§ 91.5 Pilot in command of aircraft requiring more than one required pilot.