Helicopter Westland Wessex HAS.1 Serial wa 99 Register XS120 used by Fleet Air Arm RN (Royal Navy). Built 1963. Aircraft history and location Aircraft History XS120 Fleet Air Arm Westland Wessex HAS.1, c/n WA099, f/f:? del Royal Navy as XS120, 1963 to 8653M, unk scr Wroughton 1994. 1965/67 as /66-E with 820Squadron 1980-07 A EGUD G I Ariframe RNAY Wroughton (ex 771 NAS /520-CU) to Abingdon for BDRT by Jul 1980, still there Sep 1984. (Gone by Jun 1985). 771 NAS Send Updates Use APP to upload photo @ (optional) When Now? / / Send