The AT-802 series was an enlarged AT-503, having a length of 11.27 m (37 ft) and a wingspan of 17.68 m (58 ft), a hopper of 3,028 litres (666 Imp gals), and computer controlled hopper doors to drop the load of fire retardant as required when used in that role.

The Air Tractor series of agricultural aircraft was designed in the USA by Mr. Leland Snow. well-known designer of agricultural aircraft, with more than 20 years experience in the field.

In about 2007 Air Tractor found there was a growing interest within the agricultural industry to train and prepare replacements for pilots who had been in the industry for many years and were coming to retirement time.