Westland Wessex - XT257
XT257 was a pre-production version of the HAS.3 built by Westlands early in 1965 (c/n WA241).
As such it never saw operational service with the Royal Navy, spending it's flying career on development flying. During 1966/67 it went to A&AEE Boscombe Down testing flight control systems and radio evaluation. It's flying days were over by 1980 and it was passed to the RAF for use as an instructional airframe (8719M) at No.1 School of Technical Training at Cosford early in 1995.
At some stage it acquired the yellow colour scheme of a RAF HAR.2 rescue variant - which it never was. Sold to a private owner in West Sussex in 1998, XT257 arrived by road in January 2005 for display at the Museum.
Rotor Span 56 ft
Length 65 ft 10 in
Max Weight 12,600 lb
Max Speed 135 mph
Engine 1,600hp Napier Gazelle