 Following the completion of armament trials at Furbara, Santa Marinella, in August 1939, the prototype was delivered to the Experimental Estblishment of the Regia Aeronautica" to commence its formal evaluation.During its original set of trials held at Guidonia by the "Regia Aeronautica", conducted throughout late 1939, the prototype was able to attain a speed of 518 km/h at an altitude of 5,250 m, along with 506 km/h at 6,000 m; it also climbed to 6,000 m in 6.5 minutes and demonstrated an 11,500 m altitude ceiling.Throughout the test flights, the aircraft showed that it was capable of excellent performance levels, and on several occasions, it demonstrated the ability to perform better than other existing fighters then in production.