Post by Vladimir TRIFUNOVIC

50’s in Yugoslavia (KB-6 Matajur) A group of Slovenian aircraft designer, headed by Dušan Cener, and supported by professor Dr Anton Kuhelj, gathered at the Air Constructing bureau at Ljubljana, (the Letalski Inštitut Branko Ivanuš Slovenija, LIBIS), created a two seat tourist-trainer plane, designated KB-6, prototype first flight on 4th June 1952, airfield Brnik (at Ljubljana). Plane had four-cylinders 100 kW (136 KS) Régnier 4L00. After successful trails 1953, a small number series was launched at air workshop "Letov”, at simultaneously modifications, thus in 1954 appeared three-seat version KB-6 Trised, with a stronger engine Walter Minor J-III-6/III, of 118 kW (160 HP), eight planes built, while of further development of this version, the LIBIS-160, with swept vertical tail surface, were built 11 planes. The plane was very convenient for pilots’ basic training, because stability and controllability during all phases of flight were satisfying, and stall and entering spin very gentle. The Letov KB-6 Matajur, (YU-SFD, c/n 177), is the only preserved plane of this type. Until scrapping off, plane flew in the Aero Club Celje, from where was taken over for the Air Museum’s aircraft collection.