FAA Federal Aviation Regulations (FARS, 14 CFR)

No certificate holder may use any person, nor may any person serve, as pilot in command of an airplane unless that person --

(a) Holds at least a commercial pilot certificate, an appropriate category, class, and type rating, and an instrument rating; and

(b) Has had at least 1,200 hours of flight time as a pilot, including 500 hours of cross-country flight time, 100 hours of night flight time, including at least 10 night takeoffs and landings, and 75 hours of actual or simulated instrument flight time, at least 50 hours of which were actual flight.