 In 1946 Czechoslovakia restarted the closed Messerschmitt production line at the Avia Company in Prague using the original jigs and tooling along with a substantial number of uncompleted airframes.From 1946 to 1949 about 550 airframes were completed as Avia S-99s, resembling a Bf 109G-14, and Avia S-199s (Jumo engine, otherwise unchanged).Due to a fire in a warehouse a substantial number of DB 605 engines were lost and as a substitute the Junkers Jumo 211 was found in substantial quantity.