14 C.F.R. § 61.117 Private pilot privileges and limitations: Second in command of aircraft requiring more than one pilot.
Title 14 - Aeronautics and Space
Except as provided in §61.113 of this part, no private pilot may, for compensation or hire, act as second in command of an aircraft that is type certificated for more than one pilot, nor may that pilot act as second in command of such an aircraft that is carrying passengers or property for compensation or hire. [Doc. No. 25910, 62 FR 16298, Apr. 4, 1997; Amdt. 61–103, 62 FR 40904, July 30, 1997]
Title 14: Aeronautics and Space
PART 61—CERTIFICATION: PILOTS, FLIGHT INSTRUCTORS, AND GROUND INSTRUCTORS
Subpart E—Private Pilots
§ 61.117 Private pilot privileges and limitations: Second in command of aircraft requiring more than one pilot.