Helicopter Westland Wessex HAS.1 Serial wa113 Register XS154 used by Fleet Air Arm RN (Royal Navy). Built 1963. Aircraft history and location Aircraft History XS154 03Dec63 Fleet Air Arm Westland Wessex HAS.1, c/n WA113, f/f: 19/11/1963 del Royal Navy as XS154, 03/12/1963 w/o 12/04/1965. 1965-04-12 A Nanga Gaat Accident 706Sq/V by Mar 1964, 845Sq/V-B by Apr 1964, collided with XS151 and w/o 12 Apr 1965 at Nanga Gaat, Sarawak Konfrontasi Send Updates Use APP to upload photo @ (optional) When Now? / / Send