Airlines

Airlines

FAR 91 General Aviation ( 470 Articles )

Mostly private aicraft operators, includes corporations who owns their own aircrafts.
FAR 121 Air Carriers ( 87 Articles )
Air Carriers and commercial operators of large aircraft. Includes major and legacy airlines.
FAR 125 US Civil Airplanes 20 pax or more ( 119 Articles )

Corporate and Travel clubs. Not for renting. Ie Skydiving clubs.
FAR 129 Foreign Air Carrier ( 489 Articles )
Foreign airlines and operators of US registered aircraft.
FAR 133 Rotorcraft External Load ( 320 Articles )

Mostly helicopter operators.
FAR 135 Air Taxi and Commercial ( 2218 Articles )
Commercial Operators. Air taxi and charter companies (On demand) and Fractional airilines.
FAR 137 Agricultural Aircraft Operations ( 2016 Articles )
Agricultural aircraft operators. Ie "cropdusters".