The Societa Aeronautica Italiana was founded in 1922 at Passignano sul Trasimeno. It was renamed SAI Ambrosini when the Ambrosini group took over in 1934. Known principally for the light fighter designs of ing. Sergio Stefanutti, whose S.7 formed the basis of the 107, 207 & 403, SAI Ambrosini were unable to get any of their aircraft into full scale production.

SAI Ambrosini S.7. This sports plane was the start of a series of innovative light aircraft designed by Sergio Stefanutti. Its sleek appearance was accentuated by the long canopy fairing that almost reached the spinner. Powered by a Hirth engine, it attained a 100km closed circuit record with an average speed of 251mph. Realising it could have military potential, Stefanutti developed a two-seat trainer powered by an Isotta Fraschini Beta engine. An order was placed by the Regia Aeronautica in 1943 but production issues halted the project with only 10 airframes built.

SAI Ambrosini SS4. Another advanced design by S. Stefanutti, this canard aircraft first flew in 1939. Extensive tests with the sole prototype proved promising but the project was abandoned after the prototype was lost during its second test flight due to engine failure. Cunarmodel produced a very nice 1/72 resin kit of this aircraft, which was re-issued by ItalianKits and has since been re-released by Fabrimore Soldier.

SAI Ambrosini 107. This aircraft was a single seater version of the S.7 trainer, powered by an Isotta Fraschini Gamma engine. First flown in 1940, it reached speeds if 350mph during testing but was lost in an accident in 1941.

SAI Ambrosini 207. This aircraft, also developed from the S.7, first flew in 1941. It was fitted out with armament and powered by an Isotta Fraschini Delta engine. With Stefanutti's combination of lightweight all-wood construction, efficient aerodynamics and a relatively low powered engine, this aircraft was capable of nearly 400mph in level flight. Despite a large order, only twelve airframes were completed when the air ministry halted production in favour of the 403. Both Dujin and LF Models released 1/72 resin kit. LF Models also released a 1/48 resin kit, the only one in this scale. The most accurate is RS Models 1/72 limited run injection kit. It captures its elegant lines rather well.

SAI Ambrosini 403. Based on the 207, this aircraft had many detail changes. An enlarged tail, a retractable tailwheel and an increased wing area for increased fuel capacity and additional wing armament. Although its top speed was only marginally better than the 207, it was ordered into full scale production but the Armistice brought the entire project to a crashing halt with only one airframe completed. Airmodels released a 1/72 vacuform kit and RS Models released a 1/72 403 to accompany their 207. It is the best rendition of this aircraft. A useful ‘mini Ai d'Italia’ guide was published by GAE and would be good references source.

Aeronautica Lombarda S.A.

Lombarda A.R. (Assalto Radioguidato). This was a rather large radio-controlled flying bomb concept proposed by S.Stefanutti in co-operation with the Lombarda engineers E. Preti and S. Frati. The simple design was built cheaply with non-strategic materials and powered by a surplus FIAT A.80 engine. The prototype first flew in 1943 but all remaining airframes under construction  were subsequently dismantled. Kora released decent 1/72 & 1/48 resin kits with Planet Models releasing a more refined 1/48 resin kit as well.

Lombarda AL.12P. This was an elegant glider designed by E. Preti of Aeronautica Lombarda S.A. and built by Ambrosini. Built entirely out of wood, it first flew in 1943. 16 were built and they could carry 12 fully equipped soldiers. Post WWII, an AL.12P was fitted with 2 Alfa Romeo air cooled engines. There are no known kits of this aircraft.

Ambrosini

After the war, SAI Ambrosini was renamed Ambrosini and resumed production of the S.7 trainer that was halted during wartime. A small number of other aircraft were also developed during the 1950's, after which it diversified into the marine industry until it was closed down in 1992.

Ambrosini S.7. Production of the S.7 trainer, in both single & two-seat configuration, was resumed after the war with a total of 145 built. They were all powered by Alfa Romeo 115 engines and used principally as trainers. Two Super 7 (supersettes) were built which are both preserved in museums. There are no known kits of this aircraft.

Ambrosini Sagittario. In 1953, Ambrosini developed one more research aircraft based on the S.7. It had swept wings & tail surfaces and after a few test flights, its piston engine was replaced by a Turbomeca jet engine with a four-piece petal style engine cover, as seen in the photo to the right. It was as a test bed for Stefanutti's Aerfer Sagittario II and Ariete jet prototypes, which were Italy's first aircraft to go supersonic. 1/72 resin kits of these aircraft were available from both Dujin and SEM Models but are now discontinued.

SS4

AL.12P

SAI S7

SAI 107

SAI S7

Model images are links to a build article

Assalto Radioguidato

Ambrosini Sagittario

Ambrosini Sagittario (with jet engine)

Ambrosini Super 7 (supersette)

Ambrosini S.7