It was based on the earlier Cessna 150 incorporating a number of minor design changes and a slightly more powerful engine with a longer time between overhaul. The Cessna 152 has been out of production for more than thirty years, but many are still in flying condition and are still in regular use for flight training. First delivered in 1977 as the 1978 model year, the 152 was a modernization of the proven Cessna 150 design. The 152 was intended to compete with the new Beechcraft Skipper and Piper Tomahawk, both of which were introduced the same year.[1] Additional design goals were to improve useful load through a gross weight increase to 1,670 lb (760 kg), decrease internal and external noise levels and run better on the then newly introduced 100LL fuel. All Cessna 152s were manufactured with a Lycoming O-235 engine which has been in production since 1942. The Lycoming provided not only an increase in engine power over the Cessna 150, but also was more compatible with the newer 100LL low-lead fuel. For more details, click here.