No. 422 Squadron RCAF was a unit of the Royal Canadian Air Force, formed during World War II. 422 General Reconnaissance Squadron formed at RAF Castle Archdale near Lough Erne, Northern Ireland, in April 1942. It was a flying-boat squadron, flying PBY Catalinas and Short Sunderlands to patrol the North Atlantic for German U-boats. They were redesignated a Transport Squadron in June 1945, and disbanded in September 1945. The squadron was reactivated as 422 Tactical Helicopter Squadron in January 1977, and remained a helicopter squadron until it was disbanded in August 1980.