HAWKER SIDDELEY HS/DH 121 TRIDENT
(1967-?)
The Hawker Siddeley HS.121 Trident, or DH.121, was a British short/medium range three engine airliner designed by De Havilland in the 1950s, and built by Hawker Siddeley Aviation in the 1960s, after the former became part of that group in 1960. Designed t