The UTVA Aero 3 was a piston-engined military trainer aircraft built in Yugoslavia to replace the Ikarus Aero 2 then in service. One hundred ten were built, in Yugoslav Air Force service from 1958 to mid-1970s. It was superseded by the UTVA 75.
First flown in 1956, the Aero 3 was designed to meet a Yugoslav Air Force requirement for a primary trainer that could also be used in the army co-operation role.
The Aero 3 was a low-wing cantilever monoplane that seated the student and instructor in tandem under a bubble canopy. Of all wood construction, it had a fixed, tailwheel landing gear and was powered by a nose-mounted 190 hp (142 kW) Lycoming O-435-A piston engine.
A UTVA Aero 3 prototype and UTVa Aero 3 are on display http://www.aviationmuseum.eu/World/Europe/Serbia/Belgrade/Muzej_Ratnog_Vazduhoplovstva.htm