14 C.F.R. § 125.283 Second-in-command qualifications.
Title 14 - Aeronautics and Space
No certificate holder may use any person, nor may any person serve, as second in command of an airplane unless that person— (a) Holds at least a commercial pilot certificate with appropriate category and class ratings, and an instrument rating; and (b) For flight under IFR, meets the recent instrument experience requirements prescribed for a pilot in command in part 61 of this chapter.
Title 14: Aeronautics and Space
PART 125—CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT
Subpart I—Flight Crewmember Requirements
§ 125.283 Second-in-command qualifications.
