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Mathematical Problems in Engineering
Volume 2015, Article ID 731437, 7 pages
Research Article

A Reliability-Based Approach to Nonrepairable Spare Part Forecasting in Aircraft Maintenance System

1Faculty of Sciences and Mathematics, University of Priština, Lole Ribara 29, 38220 Kosovska Mitrovica, Serbia
2Serbian Academy of Sciences and Arts, Kneza Mihaila 35, 11000 Beograd, Serbia
3State University of Novi Pazar, Vuka Karadžića bb, 36300 Novi Pazar, Serbia

Received 31 December 2014; Revised 7 April 2015; Accepted 8 April 2015

Academic Editor: Emiliano Mucchi

Copyright © 2015 Nataša Z. Kontrec et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In recent times, spare parts inventory systems have been extensively researched, but most inventory models were not fully adequate due to the stochastic nature of inventory environment. This paper proposes an approach that supports decision making process in planning and controlling of spare parts in aircraft maintenance systems. Reliability characteristics of aircraft consumable parts were analyzed in order to substantiate this approach. Moreover, the proposed reliability model was used to evaluate characteristics of subassemblies and/or assemblies these parts belong to. Finally, an innovative approach for determining the total amount of parts required in inventory and underage costs, based on observing the total unit time as a stochastic process, is presented herein.