Helicopter Westland Whirlwind HAR.10 Serial wa344 Register XP301 used by Royal Air Force RAF. Built 1961. Aircraft history and location Aircraft History XP301 Royal Air Force 1961-08-25Westland Whirlwind HAR.10, c/n WA344, ff: 25Aug61 del Royal Air Force as XP301, 31Aug61 wfu & perished Benson fire section, Sep76. Send Updates Use APP to upload photo @ (optional) When Now? / / Send