 1 delivered 76 in 1932 before beginning production of the Heinkel HD 37 as the I-7.The I-5 was first delivered to units in the Leningrad, Ukraine and Transbaikal Military Districts and comprised 20% of the VVS's fighter force by the end of 1932.During 1933 deliveries began to units in the Far Eastern, Belorussian and Moscow Military Districts and they comprised 40% of the fighter strength by the end of the year.