Claim: UTVA Aero 3 is a Yugoslavian military trainer which was first flown in August 1956 and was introduced in 1958 that replaced the piston-engined military trainer aircraft Ikarus Aero 2.
Evidence: The UTVA Aero 3 was a piston-engined military trainer aircraft built in Yugoslavia to replace the Ikarus Aero 2 then in service. August 1956 1958