File:Hawker-Siddeley Trident 2E 'G-AVFB' (39766062773).jpg - Wikimedia Commons
Hawker Siddeley Trident
The Hawker Siddeley Trident and its Variants - Airport Spotting
When Hawker-Siddeley upgraded the Trident jet to version 3B they added a few things...5 meters of length, room for 30 passengers, and oh yeah...a fourth engine! (Fourth engine circled in red; intake
Unique 3 engine medium range jet airliner for fast inter-city travel. | BAE Systems