Helicopter Westland Whirlwind HAR.4 Serial wa 43 Register XJ427 XD796 used by Royal Air Force RAF. Built 1954. Aircraft history and location Aircraft History XD796 Royal Air Force Westland Whirlwind HAR.4, c/n WA43, ntu Royal Air Force as XD796. [duplicate Sabre 4 serial] XJ427 Royal Air Force 1954-12-16f/f 16Dec54, d/l RAF as Whirlwind HAR.4 XJ412 12Jan55 w/o 16Apr57 at RAF Seletar, Singapore Send Updates Use APP to upload photo @ (optional) When Now? / / Send