In addition, full-service airlines have a high level of fixed and operational costs to establish and maintain air services. Fuel, labor, aircraft leasing, engines, spare parts, IT services and networks, airport equipment, airport handling services, sales distribution, catering, training, aviation insurance, are examples of these costs. Thus, a significant portion of the income from ticket sales is paid out to a wide variety of external providers or internal cost centers. One of the important operational costs of an airline is maintenance. Besides the costs related to perform maintenance tasks, which are inevitable, the process of performing heavy maintenance requires the removal of the aircraft from operation during days or even weeks, siting the aircraft in a hangar and not generating any revenue with this asset. However, there is no way to avoid this kind of situation, since the more an