Antonov Aeronautical Scientist/Technical Complex (English: Antonov ASTC; Russian: Авіаці́йний науко́во-т Antonov ASTC is a Ukrainian state-owned aircraft manufacturer and transport service company, specializing in the development and manufacture of very large aircraft. -Antonov, founded in 1946, its predecessor as the former Soviet Union Antonov Design Bureau, after the collapse of the Soviet Union was assigned to Ukraine, headquartered in Kiev.