Federal Aviation Regulations (FAR) – Rules to fly by:
FAR Part 91 – General Aviation (portions apply to all operators)
FAR Part 103 – Ultralight Vehicles
FAR Part 105 – Parachute Jumping
FAR Part 108 – Airplane Operator Security
FAR Part 119 – Certification: Air Carriers and Commercial Operators
FAR Part 121 – Domestic, Flag, and Supplemental Air Carriers and Commercial Operators of Large Aircraft
FAR Part 123 – Travel Clubs
FAR Part 125 – US Civil Airplanes, seating 20 or more passengers or a maximum payload capacity 6,000# or more
FAR Part 127 – Air Carriers using helicopters for scheduled interstate flights (within the 48 contiguous states)
FAR Part 129 – Foreign Air Carrier and Foreign Operators of US registered aircraft engaged in common carriage
FAR Part 133 – Rotorcraft External Load Operations
FAR Part 135 – Air Taxi Operators and Commercial Operators
FAR Part 137 – Agricultural Aircraft Operations
FAR Part 141 – Pilot School
