Ki-46, two prototypes were fitted with exhaust driven turbosupercharged Ha-112-II- Ru engines, flying in February 1944, but only two prototypes of this version were built. Mitsubishi factories made a total of 1,742 examples of all versions (34 units Ki-46-I, 1093 units Ki-46-II, 613 units Ki-46-III, 4 units Ki-46-IV during 1941-44. This