For years, the capabilities and achievements of the country in the aircraft repair and maintenance industry have been neglected by the authorities, although recently there have been encouraging developments in this field that promise great achievements for the future of the country. The global market of commercial aircraft repair and maintenance services is as The commercial aircraft market is valuable and extensive. According to the report of a joint team of companies, the size of the aircraft repair and maintenance services market in 2003 is equal to 36.1 billion dollars, of which 10.5 billion dollars is related to the engine repair and maintenance sector, 2.8 billion dollars is the share of service services and Maintenance of the aircraft in the flight line, 10.7 billion dollars is the share of heavy repairs (overhaul) and technical corrections, and 6.7 billion dollars is the share of parts and accessories repairs.
The above figures are a good indication of the extraordinary volume that the air transport companies spend and the engineering industries of repair and maintenance services can earn. The importance and value of maintenance repairs is such that it is one of the important and key parameters in the selection and operation of airplanes in the world’s airlines. During the years of sacred defense, the country’s aviation industry has gained valuable experience in this field. Also, extensive industrial investments have been made by various organizations in the field of design, construction, assembly, repair and maintenance of various aircrafts.