The Canadair CT-114 Tutor (company model CL-41) was the Royal Canadian Air Force (RCAF), and later Canadian Forces, standard jet trainer, between the early 1960s and 2000. Designed and built by Canadair, it was ordered in September 1961.The Tutor served as the Canadian Forces primary jet trainer until it was replaced by the CT-155 Hawk and CT-156 Harvard II in 2000. The CL-41G model supplied to Malaysia was built as a ground-attack aircraft. The Tutor is currently still used by the Snowbirds aerobatics team.The CL-41 design was the product of the Canadair Preliminary Design department.[1] The design incorporated a turbojet-powered, low-wing aircraft with a tricycle undercarriage and a T-type tail assembly. The flying controls are manual with spring tabs. The cabin, fitted with a rear-hinged canopy for both crew members, can be pressurized to a differential of 3 psi (20 kPa), the equivalent of about 2,000 m of altitude. It was designed to be a side-by-side trainer for providing elementary jet flight training and other training to an advanced level. The prototype first flew on 13 January 1960.One critical area of design was the positioning of the vertical stabilizer (fin). The CL-41 was intended to demonstrate spin recovery. If the fin is too far forward, a spin cannot be initiated, but if it is too far aft, recovery becomes impossible. Model tests were done to find the optimum position. The original Tutor wind-tunnel model had a cruciform tail, which was revised to the T-tail design by removing the portion above the horizontal stabilizer.In September 1961 the Canadian government ordered 190 examples of the production variant, CL-41A for the RCAF as the CT-114 Tutor. The Tutor served for over thirty years as a primary trainer. In 1976, the Canadian Forces modified 113 remaining aircraft with upgraded avionics and provisions for two belly-mounted 41 US gal (155 l) external fuel tanks.Canadair also developed an armament training and light attack variant, the CL-41G, wit