To read the full version of this content please select one of the options below:

An analytical model of the replacement costs of aircraft engine life-limited parts

Branimir Stojiljković (Department of Air Transport and Traffic, Faculty of Transport and Traffic Engineering, University of Belgrade, Belgrade, Serbia)
Ljubiša Vasov (Department of Air Transport and Traffic, Faculty of Transport and Traffic Engineering, University of Belgrade, Belgrade, Serbia)
Olja Čokorilo (Department of Air Transport and Traffic, Faculty of Transport and Traffic Engineering, University of Belgrade, Belgrade, Serbia)
Goran Vorotović (Department of Aerospace Engineering, Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 8 June 2021

Issue publication date: 5 August 2021

100

Abstract

Purpose

The purpose of this paper is to present novel recursive expressions for modelling the replacement costs of aircraft engine life-limited parts during shop visits to assist engine operators in both evaluating their decisions regarding the applied life-limited parts management strategies and tracking the replacement costs consistently throughout the life of the engine.

Design/methodology/approach

The replacement costs of aircraft engine life-limited parts are modelled analytically in this research, which strives to quantify the costs of used and unused lives of the replaced parts, incurred during engine shop visit events. Inputs for this model include the list price of life-limited parts, the replacement decisions made on all previous shop visits and the number of cycles the engine has operated at different thrust ratings on all previous operating intervals.

Findings

The average annual escalation rate of life-limited parts list prices was shown to range from 5% to 7%. The presented model is not only suitable for calculating the costs of used and unused lives of life-limited parts during past engine shop visit events but also for application in the life-limited parts replacement cost forecasting and optimisation models.

Originality/value

Uniquely derived recursive expressions represent the final result of the developed model which, to the authors’ knowledge, had not been studied elsewhere in the academic literature. The analysis of aircraft engine life-limited part list prices carried out to account for the average annual escalation rate enables the prediction of replacement costs during subsequent shop visits.

Keywords

Acknowledgements

The authors are very grateful to Shannon Ackert, Senior Vice President of Commercial Operations at Jackson Square Aviation, for providing technical data that came from his website Aircraft Monitor. Funding:This research was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia under the project no: TR36001.

Citation

Stojiljković, B., Vasov, L., Čokorilo, O. and Vorotović, G. (2021), "An analytical model of the replacement costs of aircraft engine life-limited parts", Aircraft Engineering and Aerospace Technology, Vol. 93 No. 5, pp. 776-782. https://doi.org/10.1108/AEAT-12-2020-0297

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

Related articles