Helicopter Westland Sioux Serial wa505 Register XT798 used by Army Air Corps AAC (British Army). Built 1965. Aircraft history and location Aircraft History XT798 26Nov65 Army Air Corps 1965-11-26AAC Sioux AH.1 d/d 26Nov65, w/o 01Mar67 1973 A EGOE G I Airframe to G I use at Tern Hill by 1973. Send Updates Use APP to upload photo @ (optional) When Now? / / Send