Browse Publications Technical Papers 2019-01-1909
2019-09-16

Improving and Evaluating Aircraft Maintenance On-Time Performance for Wide-Body A-Checks Delays 2019-01-1909

Martinair is based on Schiphol Oost and is part of the KLM Group since 2008. The KLM Group on its turn is part of the Air France – KLM Group. Martinair started as a charter company and was founded by Martin Schröder. Martinair is now a cargo operator with its own maintenance base at Hangar 32 on Schiphol Oost. It operates 7 McDonnell Douglas MD-11’s and 6 Boeing B747-400’s. The focus will be on the MD-11 tri-jet in this thesis. Due to the entry in the KLM Group in 2008, changes have been made for synergy reasons to the Martinair organisation. Martinair Maintenance and Engineering is now focussing on becoming a Regional Jet Center. The maintenance on the Embraer E-190 of KLM Cityhopper will be the main part of the work. Due to the new focus of the Martinair maintenance and engineering department, the maintenance capacity for a MD-11 A-check will no longer be available. It is therefore chosen to outsource the MD-11 A-check from Martinair maintenance and engineering to KLM engineering and maintenance. The objective is to perform the A-checks on-time after this transfer. An analysis into the delay occurrences at Martinair and KLM is done to improve the on-time performance of the A-check. To achieve these improvements a thorough understanding of the processes on the organisational and departmental level involved in the A-check execution is required. The maintenance methods, outsourcing scenarios and condition of the aircraft play an important role in improving the on-time performance. Through interviews with Martinair and KLM personnel and an ANOVA-GLM analysis the factors for an ATA chapter selection expression are determined. The results of this expression will determine the ATA chapters for a further case study. Both Martinair and KLM consist of an EASA Part M (continuing airworthiness) and EASA Part 145 (aircraft maintenance). The responsibility surrounding the A-check is carried by a large variety of management staff that are closely related to the departments within the companies. The department goals within both companies are the same in general lines but differ in the way they are reached. These differences originate from different company sizes, maintenance program build-up and the use of different ICT packages/programs. For the outsourcing project a variety of choices has to be made. Which maintenance program is used? What software is used and who’s departments, KLM’s or Martinair’s, should perform the tasks. These questions are answered by analysing the individual departments, being engineering, planning, material unit, production area and maintenance control centre.

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