VIP version powered by Alvis Leonides engine, 2 built for UK Royal Flight. List of Operators of Westland Whirlwind HCC.8 From Organisation with model Whirlwind HCC.8 1955 Royal Air Force Whirlwind 135 1955/81 Construction Numbers on database of Whirlwind HCC.8 2hcc.8 Construction Numbers Help Us C/NYearHistory wa266 1959 XN126,8655M wa267 1959 XN127 2 C/N.