The museum started out as the aircraft and technical peripherals collection of the “Kilián György Flight Technical College” in 1973. Since then many things changed but the collection remained, growing always bigger. Originally the museum focused on military aviation but later civil and utility aircraft were introduced to the collection which is divided into two: the open air part, and a separate indoor area with weaponry, uniforms and photographic collections. The museum also stores the remains of a number of Second World War warplanes shot down over Hungary and it plays a leading role in salvaging and conservation of such wrecks. As result of these efforts the museum recovered an Il-2, two Bf 109s and a LaGG-5. The collection also included a Lisunov Li-2 which was since restored to airworthy condition, thus becoming the only airworthy exemplar of the kind.
Source : WIKIPEDIA