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Item Aircraft recycling system optimalization and aircraft sections re-use possibilities after the end of their economic life(University of Zilina, 2022) Chebeň, Juraj; Rostáš, JánPurpose of this article is to evaluate re-use of sections from retired aicraft for further usage and additional optimalization of recycling and re-use of materials used in aircraft construction. With hundreds of commercial airplanes retired every year, the need for innovative approaches in recycling process rises. The concept of re-using parts from retired aircraft is not new. Before scrapping, valuable parts are of course stripped of the airplane. The article assesses if there is possibility to re-use parts and sections that usually end up scrapped in aviation and under which circumstances. Its first part is focused on analysis of procedures currently utilized during aircraft recycling, including brief description of decomissioning process, current state aircraft recycling in general, processes of disassembly and dismantle, existing facilities, description of recycling of alloys and composite materials. Second part deals with legislative, technical and environmental options of aircraft recycling and re-using aircraft sections. Third part focuses describes current parts market, together with proposal how to make it more efficient, current and possible future trends concerning aircraft recycling and re-use of materials and comparison of recycling between USA and EuropeItem NÁVRH MATERIÁLNEJ ČASTI LETÚNA PIPER PA-34 220T(Žilinská univerzita v Žiline, 2020) Chebeň, Juraj; Škultéty, FilipThe aim of the paper is to create a comprehensive teaching material that will help students of the study program Professional Pilot of the University of Žilina to complete practical flight training on multi-engine aircraft in the Air Training and Education Centre (LVVC). The first part is devoted to a general description of the Piper PA-34 Piper PA-34-220T aircraft, including a brief history, an overview of versions and technical & operational parameters with a focus on the versions of Seneca III and Seneca V, which LVVC currently operates. The second part is focused on a detailed description of individual systems and systems with regard to design solutions of the type. The last, third part describes the standard instrumentation of the PA-34 and subsequently the equipment of specific aircraft operated by LVVC. The work is supplemented by appendices that contain performance graphs, checklists, and mass and balance diagrams.