Part 91
Small non-commercial aircraft within the United States






































































































Part 121
Large U.S.-based airlines, regional air carriers, and all cargo operators












































































Part 129
Foreign air carriers or operators who conduct passenger or cargo operations to, from, and transiting the United States


Part 135
Small single aircraft operators to large operators that often provide a network to move cargo to larger Part 121 air carriers



















































































































































































Part 141
Federal Aviation Administration (FAA)-certificated pilot schools












Part 145
Maintenance facilities that are engaged in the maintenance, inspection, and alteration of aircraft and aircraft products
















OEM
Original Equipment Manufacturer

