Abstract:

In the aviation sector, maintenance repair (BO) is an obligatory activity that is subject to regulations to ensure the safe and continuous flights of aircraft. If necessary commercial, military aircraft must be carried out at certain intervals. BO activities are the most expensive area after fuel for airlines. An important factor that distinguishes BO systems from classic production systems is the use of certain pieces or modules in the form of rotable (rotable) inventory. In the case of a volatile inventory, the corresponding module of the aircraft coming to the BO operations for service is replaced by the ready-made module to the flight in the BO exchange inventory. In this case, the airline, which is the customer, continues its operations with almost instant change without interruption of the flight. The BO company exchanges the inventory type module through the maintenance repair process and then retains it in the inventory for future requests to be used again in the exchange. While the BO company makes the modular exchange times and maintenance repair schedules for aircraft, it must try to ensure that aircraft may arrive for subsequent maintenance at the latest date or before that date, taking into account the time they have been on the latest maintenance. For early arrivals, the airlines will not prefer economically. A fixed repair maintenance capacity for the BO company and limited inventory are significant limitations on production scheduling. The problem described above in this study, with the aim of minimizing the total early service purchases, the problem was analyzed with the help of numerical solutions, modeled under the assumptions of a specific starting stock, limited production capacity, multi-type deductive inventory, and final planning horizon. The reduced marginal benefit of increasing the starting level or process capacity of a unit has been shown and this benefit has been shown in relation to the process time and process capacity.

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