The Cessna O-1 provided the basis for the Italian development of a turboprop version. A two-seat STOL light monoplane powered by a 298kW Allison 250-B17 turboprop engine, the prototype first flew on 24 May 1969.
The SM 1019 was evaluated by the Italian Army Light Aviation, which ordered 80 SM.1019E1s, under the designation AL-2. Optional armament or equipment is carried on two underwing hardpoints.
Engine: Allison 250-B15G, 317 shp
Wingspan: 10.97 m / 36 ft 0 in
Max. speed: 280 km/h / 174 mph