The Aero Commander 500 is a family of light twin-engined aircrafts, developed and manufactured by the formerly known Aero Commander, which became a division of Rockwell International in 1965. The initial production model was the Aero Commander 520, while the line featured numerous variants of this, each with a new designation. The prototype and initial version were installed with two Lycoming O-435-A engines, and comprised of a retractable landing-gear, high-wing monoplane configuration, made off all-metal construction. The later variant Aero Commander 680T Turbo Commander had a stretched fuselage and larger tail, as well as pressurization in the more spacious cabin. Being the first turboprop engine variant, two Garrett TPE331-43 powerplants were utilised.