The Impact of Aircraft Operational Factors on Turbofan Engine Direct Maintenance Costs

Turbofan engine shop maintenance costs can account for a third of aircraft total direct maintenance costs. This considerable amount raises the need to analyze primary engine maintenance cost drivers in order to achieve the lowest possible costs per engine flight hour. Main operational factors that affect time on-wing and their impact on engine maintenance costs are presented in this paper. For airlines, understanding both the on-wing and off-wing elements of engine maintenance costs is a key factor in successful business planning. The purpose of this paper is to identify and analyze the off-wing elements of engine maintenance costs including take-off thrust rating, applied take-off thrust derate, flight hour-to-cycle ratio, engine utilization, environmental conditions and to show the nature of their influence on engine direct maintenance costs. The estimation of the impact is based on turbofan engine data collected from different sources of information available to the authors of this paper.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: pp 471-478
  • Monograph Title: Proceedings of First International Conference on Traffic and Transport Engineering (ICTTE)

Subject/Index Terms

Filing Info

  • Accession Number: 01598458
  • Record Type: Publication
  • ISBN: 9788691615307
  • Files: TRIS
  • Created Date: Apr 21 2016 1:37AM