In 1974 Aeronautica Industrial SA (AISA) started construction of the prototype AISA-GN, which was an all-metal four-seat autogyro with a small stub wing, three-blade main rotor, twin booms and a fixed tricycle undercarriage. After a long development, the prototype was first flown on 20 July 1982, powered by a 225kW Lycoming IO-540-K-1A5 engine. The prototype was damaged in September 1982, and the project was then abandoned.
AISA GN Engine: 1 x Lycoming IO-540-K-1A5, 225kW Main rotor diameter: 12.8m Fuselage length: 6.5m Height: 3.2m Wingspan: 2.6m Take-off weight: 1200kg Empty weight: 708kg Max speed: 240km/h Range: 800km