The first all-metal aircraft with an engine VK107A was built in April, 1945. The aircraft was notable for its reinforced construction and improved engine cooling system. In the later half of 1945 the serial production was begun on the aircraft works #31 in Tbilisi. A small number of Yak-3 with VK107A was built on the aircraft works #292 in Saratov, but Yak-3 was never launched into serial production. The military gave preference to fighter Yak-9U as a more reliable and suitable for this engine. In sum several dozens of fighters Yak-3 with an engine VK107A were built.