Helicopter Westland Wessex HAS.1 Serial wa 39 Register XM918 used by Fleet Air Arm RN (Royal Navy). Built 1961. Aircraft history and location Aircraft History XM918 Fleet Air Arm Westland Wessex HAS.1, c/n WA039, f/f:? del Royal Navy as XM918, 27/09/1961 conv HAS.3, unk w/o 25/07/1970. Send Updates Use APP to upload photo @ (optional) When Now? / / Send