Provost
60 years ago
Originally developed by Percival as a cheap jet-powered derivative of its successful Alvis Leonides, radial-engined Piston Provost, the Jet Provost evolved into an entirely new aircraft. Powered by a Bristol-Siddeley Viper 102 engine, the prototype aircraft (XD674) took its first flight on 26th June 1954.
In later years after entering service with the RAF, BAC looked at producing a Jet Provost that could also be used as a light attack aircraft as well as a trainer, and the result was the Strikemaster.
Changes made to the airframe included 8 stores hard-points underneath the wings, a strengthened airframe and shortened landing gear for use in rough terrains. The prototype Strikemaster first flew in October 1967.
Squirrel
40 years ago
The prototype Aerospatiale Ecureuil helicopter, powered by an Avco Lycoming LTS-101 turboshaft, first flew June 27 1974

