Helicopter Westland Sioux Serial wa333 Register XT174 used by Army Air Corps AAC (British Army). Built 1965. Aircraft history and location Aircraft History XT174 Army Air Corps 1965-08-23AAC Scout AH.1 d/d 23Aug65 1972-07-08 A EGXZAAC with 666 Sqn displayed at RAF Topcliffe Open Day 666 Squadron (Volunteers) 1973-04-18AAC w/o 18apr73 hit telephone lines at Caledon, Tyrone, Northern Ireland Send Updates Use APP to upload photo @ (optional) When Now? / / Send