Tearing, crushing, bending or accelerated aging – these are only selected from many methods utilized by the Aviation Institute of Aviation method Institute to find the durability and durability of materials utilized in aviation. Together with these brutal studies, methods of non-destructive investigating of the strength and method condition of the structures of the airframes are besides developed. They let not only to check the method condition of aircraft, helicopters or unmanned aircraft, but besides to detect and repair harm resulting from the operation of equipment utilized by the Polish Air Force. The Airworthiness Authority besides cooperates with investigation and academic centres, e.g. as part of global investigation programmes aimed at improving safety, inter alia, by constantly monitoring the structure during flight.