The AgustaWestland AW109, twin-engine, eight-seat multi-purpose helicopter built by the Italian manufacturer Leonardo S.p.A. It was the first all-Italian helicopter to be mass-produced. Developed as the A109 by Agusta, it originally entered service in 1976 and has since been used in various roles, including light transport, medevac, search-and-rescue, and military roles. The AW109 has been in continuous production for 40 years. The AgustaWestland AW119 is a derivative of the AW109, the main difference being that it is powered only by a single engine.