Helicopter Westland Whirlwind HAS.7 Serial wa204 Register XL842 used by Fleet Air Arm RN (Royal Navy). Built 1957. Aircraft history and location Aircraft History XL842 Fleet Air Arm 1957-12-02Westland Whirlwind HAS.7, c/n WA204, ff: 02Dec57 del Royal Navy Fleet Air Arm as XL842, 17Feb58 w/o 30Aug58. Send Updates Use APP to upload photo @ (optional) When Now? / / Send