Helicopter Westland Whirlwind HAR.2 Serial wa146 Register XK990 used by Royal Air Force RAF. Built 1956. Aircraft history and location Aircraft History XK990 Royal Air Force 1956-12-29Westland Whirlwind HAR.2, c/n WA146, ff: 29Dec56 del Royal Air Force as XK990, 11Jan57 conv HAR.10, unk w/o 27Oct67. Send Updates Use APP to upload photo @ (optional) When Now? / / Send