Flight Assignment: A.T.P. (Airline Transport Pilot or simply ATP) was a flight simulator for personal computers released in 1990 by the now-defunct subLOGIC. It runs on MS-DOS based PCs. The simulation models the Boeing 737, 747, 767, Airbus A320 and Shorts 360. It features most major aviation beacons in the United States and about 30 major airports. It also includes a multi-voiced air traffic control simulator.