Helicopter Westland Wessex HU.5 Serial wa171 Register XS497 used by Fleet Air Arm RN (Royal Navy). Built 1964. Aircraft history and location Aircraft History XS497 Fleet Air Arm Westland Wessex HU.5, c/n WA171, f/f:? del Royal Navy as XS497, 22/06/1964 w/o 14/12/1965. 1965-12-14 A Bau Accident 848Sq/S-A by Jan 1965, crashed and w/o 14 Dec 1965 after main engines failure near Bau, c 15nm SW of Kuching, Sarawak 848 NAS Konfrontasi Send Updates Use APP to upload photo @ (optional) When Now? / / Send