The Canadair CT-133 is the result of a 1951 contract to build T-33 Shooting Star Trainers for the Royal Canadian Air Force (RCAF). The powerplant would be a Rolls-Royce Nene 10 turbojet instead of the Allison J33 used by Lockheed in the production of the original T-33. A project designation of CL-30 was given by Canadair and the name was changed to Silver Star. The appearance of the CT-133 is very distinctive due to the large fuel tanks usually carried on each wingtip.
A total of 656 CT-133 aircraft were built by Canadair.