Most of the P.11s were destroyed in 1939, though thirty-six were flown to Romania and taken over by the Romanian Air Force. Due to their obsolescence, these veteran aircraft were not used in combat; only a small number were used for training while the rest were dismantled for spare parts. It has been alleged that some aircraft were captured and saw limited use by the Germans. A pair of P.11s were captured by the Red Army and used for testing. One landed in Hungary (near the town of Hajdúböszörmény) and was used as a glider tow plane by the University of Technology in Budapest.