Founded 1958 in Wichita Falls, Texas, Leland Snow became Air Tractor president. Derived from the S2B he had designed and built in the fifties, Snow started design work on a new cropduster. In 1972 he obtained a small business loan, rented a building back in Olney and started to build jigs and tooling for what was to become the Air Tractor AT-300 – a conventional layout crop-duster powered by a Pratt and Whitney R-985-AN1 of 450hp.
Has built more than 1,650 Air Tractors, with radial pistonengined AT-401B (can be converted to turboprop power), turboprop-powered AT-402A (available since 1997), higher-powered AT-402B with 680 shp engine, heavier and 1,100 shp turboprop-engined AT-502A, 680 shp AT- 502B, AT-503A two-seater for agricultural work and training, AT-602 with 1,050 shp engine and the second largest Air Tractor model, AT-802 two-seater and the largest of all Air Tractors suited to agricultural and firefighting roles (first flown 1990), and AT-802 single-seat verson, available for purchase.