The C172 is a four-seat, single-engine, high-wing airplane, capable of cruising at 131 knots. Original models shipped with 0-300, 145 horsepower, 6-cylinder engines. Its considered the most popular flight training airplane in the world and is still being produced today. More than 35,000 aircraft have been built.
The C140 is a two-seater, single-engine, light utility airplane with a maximum speed of 109 knots (125 mph). Original models came equipped with 85-90 horsepower, 4-cylinder piston engines. The C140 was first introduced in 1946 at the end of World War II, and produced from 1946-50. More than 7,664 airplanes have been sold.