Certificate of 150 hours type test
(courtesy of Rolls-Royce Heritage Trust)
The aircraft was powered by four Ghost turbojet engines built by the de Havilland Engine Company Limited.
The Ghost engine was developed from the de Havilland Goblin engine which was fitted to the de Havilland Vampire and the first Gloster Meteor. The Ghost was a simple construction based on Sir Frank Whittle's early designs and suited to civil use as it had long intervals between services.