The UTVA Aero 3 was a piston-engined military trainer aircraft built in Yugoslavia to replace the Ikarus Aero 2 then in service. 110 were built, in Yugoslav Air Force service from 1958 to mid-1970s. It was superseded by the UTVA 75.
Read more about UTVA Aero 3: Design and Development, Former Military Operators, Aircraft On Display, Specifications