The collection of aviation of the National Technical Museum is oriented mainly on documentation of the domestic civilian aeronautics. It contains 34 aeroplanes of which 18 are displayed in the permanent exhibition. Undoubtedly, the most interesting exhibit is the plane Bleriot XI from 1910 that was used by ing. Kaspar in his first long-distance flight in the history of Czech aeronautics. Connoisseurs will be attracted by three world-wide unique army planes from the World War I - Russian Anatra Anasalj, American LWF Tractor and Austrian Knoller CII. The gallery contains a permanent exhibition of the history of domestic and world aviation presented by a large collection of models. Another aeroplanes in ownership of the National Technical Museum are displayed at the exhibition of the Army Aviation Museum in Prague-Kbely. Here, visitors can appreciate the fighter planes Supermarine Spitfire LF Mk.IXE and Lavockin La-7 that were used by Czechoslovak pilots during the World War II.