De Havilland DH.105 Comet 1
The first commercial jet airliner to enter service, developed by De Havilland. It was a pioneering aircraft but suffered from metal fatigue issues in early models.
Br-40: British de Havilland Comet Transport Aircraft
A British jet-powered airliner that was the first commercial jet airliner to enter service. It was used by several airlines, including BOAC, and was known for its speed and comfort.