Accident700Sq(H)Sq/508 by Oct 1960, 706Sq/508 by Jan 1962, 814Sq/G-B by Oct 1964, crashed during night exercise at Sembawang 24 Nov 1964, to Fleetlands. To Yeovil for conv to HAS.3 Feb 1965.
Wessex Mk. 3 XM 834 Engine handling and production rotor speed governor performance trials at Boscombe Down Jan-Mar 1967 with Gazelle MK165. Performance around all axis described as good
Westland Wessex HAS.3A&AEE Boscombe Down by Dec 1966, 700H Sq/580-CU by May 1967, 700H Sq/584-CU by Aug 1967, 814Sq/274-V by Sep 1967, 706Sq/574-CU by Sep 1968, 706Sq/570-CU by Oct 1969, broke up during ground running 5 Oct 1970. To Lee for AIU. Lee dump by Apr 1971.