Helicopter Westland Sioux Serial wa402 Register HP-850 XT243 used by Army Air Corps AAC (British Army). Built 1966. Aircraft history and location Aircraft History XT243 Army Air Corps 1975-07-26 A EGVPAAC Sioux AH.1 with ARWF coded T at Middle Wallop Airshow 1975 unk to HP-850 Panama HP-850 - Private Send Updates Use APP to upload photo @ (optional) When Now? / / Send