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
Airline codes by IATA and unique among all the airlines, used to identify the airline in various accounting activities such as ticketing. For instance, Lufthansa (LH/DLH) has been assigned 220 as accounting code, and all the flight tickets issued by that airline start with "220-". The IATA code search page references the accounting code for every airline having one. Airline codes This is a list of airline codes. The table lists IATA's two-character airline designators, ICAO's three-character airline designators and the airline call signs (telephony designator). Historical assignments are also included. IATA airline designators, sometimes called IATA reservation codes, are two-character codes