Air Tractor, Inc. - Leading ag-aircraft manufacturer, located in Texas. Air Tractor builds the AT-402, AT-502, AT-602, as well as the largest ag-aircraft in the world, the AT-802A and AT-802F initial attack firefighting aircraft. Lane Aviation, Inc. - Lane Aviation specializes in turbine and piston Air Tractors. AgAir Update Online - Monthly publication providing news, new products, and modifications for the agricultural aircraft and aviation industries.. Walter TurboProp Engines - Reliable turbine engines for the ag-aircraft industry. FAA certified. Provine Helicopter Service - Aerial applicator with a fleet of Bell helicopters. Apply pesticides for forestry and ROW uses predominantly in the Southern United States. Alberta Aerial Applicators Association - Non-profit society representing the aerial application industry of Alberta, Canada. Air Tractor - Provides aeronautical crop spraying and dusting as well as pilot training. National Agricultural Aviation Association - For the aerial application industry. Site has information on history, board members, advantages of aerial application. Cascade Aircraft Conversions, LLC. - Provides used aircraft and turbine conversions and well as spraying services in Washington State. Field Air - Aerial agricultural company providing spraying, baiting and other services to the rural industry in Eastern Australia.