The Air Tractor series

The Air Tractor was designed by company founder Leyland Snow who earlier designed the Snow S-2
(built by Rockwell and Ayres).

The initial Air Tractor model was the Pratt & Whitney R-1340 radial powered AT-301 which established
the Air Tractor series' basic configuration. First flight was in 1973, and 600 were built. The PT6
turbine powered AT-302 introduced in 1977 was replaced by the AT-402. The R-1340 powered AT-401 introduced
a greater span wing and increased chemical hopper capacity and first flew in 1986. The AT-402 is similar
other than its 505kW (680shp) PT6A turboprop engine, the AT-402B has increased span wings.

The AT-502A (first flight Feb 1992) is based in the 402B but has a far more powerful 820kW (1100shp) PT6A-45R
turbine driving a slow turning five blade prop. Its excess power reserves allow high speed or high altitude
operations. The AT-502B has Hoerner wingtips and optional equipment including GPS.

The 5.4 tonne MTOW PT6 powered AT-602 first flew on December 1 1995 and became available for delivery in the
second half of 1996.

The larger and heavier two seat AT-802 and single seat AT-802A are the largest purpose designed single engine
ag aircraft in production. First flight was in October 1990. The AT-802F is a dedicated firefighting version.