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The Mooney M20 "A model" usually listed as the M20A was the successor to the Lycoming 150hp M20 model Mooney. This model was introduced in 1958 with the Lycoming O-360-A1A with 180hp and it inherited a wood wing from its predecessor, the M20. The airframe was essentially the same as the M20. Image File history File links Broom_icon. ... Lycoming Engines is a major aircraft engine company, known primarily for their smaller general aviation engines. ... Mooney M20 is a general aviation aircraft. ... The Mooney Airplane Company (MAC) is a U.S. manufacturer of single-engined general aviation aircraft. ...