Helicopter Westland Wessex HAS.1 Serial wa 21 Register XM840 used by Fleet Air Arm RN (Royal Navy). Built 1960. Aircraft history and location Aircraft History XM840 05May61 Fleet Air Arm Westland Wessex HAS.1, c/n WA021, f/f:? del Royal Navy as XM840, 05/05/1961 w/o 29/05/1962. 1961-07300-R A EGDRto Culdrose for 815 NAS by Jul 1961 815 NAS 1962-03-29300-R B off Aden Accident damaged in flight deck handling collision with Scimitar, aboard HMS Ark Royal, off Aden. Repaired. 815 NAS 1962-05-29300-R C 55nm SE Hong Kong Accident ditched from HMS Ark Royal in Far East and w/o 815 NAS Send Updates Use APP to upload photo @ (optional) When Now? / / Send