Air Spray was owned and operated by Canada's Aviation Hall of Fame[6] inductee, Donald T. Hamilton until his death in 2011.

While the TBM Avenger was a relatively effective air tanker, the industry was looking to a next generation alternative in the form of a faster, medium-sized, twin engine aircraft.

Built in the United States between 1944 and 1945 and used extensively during the Korean war, its powerful twin Pratt & Whitney R2800 engines provided the aircraft with speed and the ability to carry a large payload of fire retardant.

After conversion was complete, the company added a Cessna 310 to serve as a birddog aircraft (or lead plane) and Air Spray was awarded a contract for the group by the Province of Alberta.

Manitoba retains ownership of the water-bomber aircraft, parts, inventory, special tools and equipment but care and custody is transferred to the contractors.

[14] Air Spray is an Approved Maintenance Organization with Transport Canada[15] and a Repair Station with the Federal Aviation Administration (FAA)[16] and therefore during the summer months, when most firefighting aircraft are on location around the country, the Air Spray staff perform general aircraft maintenance and repairs.

[17] In Canada, Air Spray also carries out maintenance, repair and overhaul (MRO) of general aviation customer aircraft under the trade name of Springbrook Aerospace.

[15] The company has developed a Transport Canada certified flight simulator for training pilots on the L-188 Electra and TC 690 aircraft.

A third CL215 aircraft expanded the range of operation to include forest fire suppression missions in Yukon, Quebec, Ontario and British Columbia.

[21] The crew aboard the bird dog includes a pilot and one or two air attack officers (AAO), who locate the fire, determine the optimal flight path for the following tanker, and recommend effective retardant dispersal patterns.

[4] As of February 2016, the U.S. Federal Aviation Administration lists six AT802A Air Tractors to Wells Fargo Bank Northwest NA Trustee.