The A.120 was a conventional, parasol-wing monoplane with fixed tailskid undercarriage which accommodated the pilot and observer in tandem open cockpits.
The design was based on a wing developed for the Ansaldo A.115 and the fuselage of the Dewoitine D.1 fighters that Ansaldo had built under licence.
The type was operated in modest quantities by the Italian Air Force, and was exported to the air forces of Austria and Lithuania, the latter’s machines remaining in service until the Soviet annexation of the country.
Prototype with Lorraine 12Db engine
Improved version with FIAT A.20 engine
Definitive production version, most with FIAT A.22 engine
Revised version for Austrian service
8.60 m (28 ft 3 in)
12.80 m (42 ft 0 in)
2.80 m (9 ft 2 in)
27.4 m2 (295 sq ft)
1 × Fiat A.22 piston engine,
410 kW (550 hp)
254 km/h (158 mph, 137 kn)
7,000 m (23,000 ft)
1 × or 2 × fixed forward firing 7.7. mm machine guns
1 × trainable, rearward firing 7.7 mm machine gun for observer.