In February 1934, the "Regia Aeronautica" stipulated a contract with Campini for the realization of two jet airplanes. For the construction of his machines, Campini contacted the firm "Aeroplani Caproni" of Taliedo, whose owner had been a believer in this new kind of propulsion since the beginning. The production of the first two prototypes began immediately, but was delayed mostly due to the unavailability of the aeronautical engines used to propel the compressor, and by increasing costs.

The prototype which flew for the first time on August 27, 1940 was an elegant monoplane with two seats wholly constructed of metal with a low wing of elliptical shape. After a series of tests and demonstration flights, the first prototype was transferred in November 1941 from Milan to the "Centro Sperimentale" in Guidonia, near Rome.

Test flights continued until 1942 when the plane was abandoned and later mined by the retreating Germans. The relic was examined by the British, sent to England and later scrapped. The second prototype, which left the assembly line in 1941 and had flown only once, survived the war and is currently preserved in excellent condition at the "Museo Storico dell’Aeronautica" in Vigna di Valle, just north of Rome.