LOT Polish Airlines Flight 5055 accident's cause was similar to that of LOT Polish Airlines Flight 007's crash seven years earlier. After the disaster of Flight 007, the Polish investigatory commission established that its engine shaft disintegration was the result of metal fatigue; improper alloy preparation resulting in a defective mechanism which was less resistant to fatigue; and a faulty design of the engine shaft. Detection of these faults was possible only after complete disassembly of the engine and detailed analysis of all its elements, and as such was beyond the capabilities of aircraft maintenance personnel. These concerns were addressed by the Polish Government's Special
American Eagle (airline brand) combined American Eagle branded fleet consists of the following regional jet aircraft: • In January 1988, Nashville Eagle became AMR Corp.’s first and only start-up airline, using equipment acquired from Air Midwest. • Business Express was acquired by AMR Eagle Holdings Corporation in March 1999, although it never flew under the American Eagle brand before being fully integrated into American Eagle Airlines, Inc. in December 2000. The American Eagle brand, through its various regional and commuter airline partners, operated a variety of twin turboprop aircraft over the years including the following types: Piedmont Airlines, a regional carrier wholly owned by