The Avia S-199 was initially built purely from existing parts stocks, the aircraft gradually evolved into something unique!
In 1945, following World War II, Czechoslovakia, which had been the location of several Messerschmitt Bf-109 manufacturing plants, found itself with a substantial stock of unused Bf-109 components. In need of an air force, Czechoslovakia decided to use this stockpile to build it's own fighter aircraft, which is christened the Avia S-199. For example, when engine DB605 engine stocks ran out, the Jumo 211F was used, changing the aircraft's appearance substantially.
Features four models:
1. S-99: Assembled directly from Bf-109G-14 parts, with DB605AS engine, but with some cockpit modifications
2. S-199: Early version with Jumo 211F engine, Erla canopy and under-engine oil cooler radiator
3. S-199: Standard production, Jumo 211F engine, bubble canopy on rails, new engine oil heat exchanger (no visible radiator), and modified wheel axles (wheels now fully vertical)
4. S-199: Final version (as above, with small differences, such as engine hand crank on rear cockpit bulkhead)