The Cessna 172 is one of the best-selling single engine airplanes in the world. Over 43,000 of them have been made. It is made by Cessna Aircraft Company. It can carry 4 people including the pilot. From 1956 until 1967 it had a Continental six-cylinder piston engine. Beginning in 1968, the 172 was powered by a Lycoming four-cylinder piston engine.