Helicopter Westland Whirlwind HAR.2 Serial wa 99 Register XJ728 used by Royal Air Force RAF. Built 1956. Aircraft history and location Aircraft History XJ728 Royal Air Force 1956-01-18Westland Whirlwind HAR.2, c/n WA99, ff: 18Jan56 del Royal Air Force as XJ728, 01Feb56 w/o 20Jan60. Send Updates Use APP to upload photo @ (optional) When Now? / / Send