Helicopter Westland Whirlwind HAR.4 Serial wa 21 Register XD164 used by Royal Air Force RAF. Built 1954. Aircraft history and location Aircraft History XD164 14Jul54 Royal Air Force 1954-07-14Westland Whirlwind HAR.4, c/n WA21, f/f:21May54 del RAF as XD164, 14Jul54 conv HAR.10, unk wfu as i/a, 7853M, unk scr. Halton, unk. 1954-09 A EGDMnoted at Boscombe Down airshow. 1955-061439 Flt by May 1975 until c Nov 1957 1439 Flt Operation Grapple Send Updates Use APP to upload photo @ (optional) When Now? / / Send