Air Spray L-188 Electra Airtanker 490 at at Red Deer Regional Airport, AB.
13 Electras are registered to Canadian company Air Spray, converted into firefighting airtankers with a 3000 US gallon capacity tank.
As of July 2011, 22 L-188 freighter and firefighting airtankers remained in service. Atlantic Airlines operated three and Buffalo Airways four, while another 13 Electras were registered to the Canadian company Air Spray, converted into airtankers with a 3000 US gallon capacity tank; and two to Conair Group, also configured as airtankers.
Red Deer Regional Airport
Canadian Aviation Blog