History
The Polikarpov U-2, later PO-2, was designed as a light training biplane, and first appeared in 1928. It was a two seat, of mainly wooden construction, training aircraft similar in many respects to most late twenties biplanes, and had all of the characteristics required for a military trainer, including rugged construction, a low powered but reliable powerplant, and excellent flying characteristics. It so impressed Soviet authorities that it was produced in very large numbers, over 30,000 being completed by Russian and foreign factories and maintenance units between 1928 and 1953, and the last ones weren’t built in Poland until 1959. The PO-2 served mainly as a primary trainer at first, but eventually was pressed into service as a crop duster, military liaison aircraft, med and general supply aircraft, and later as a reconnaissance and light bombing type.