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Anpassning och optimering av checkprogram för AW139
Mälardalen University, School of Innovation, Design and Engineering.
Mälardalen University, School of Innovation, Design and Engineering.
2015 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Customization and optimization of check program for AW139 (English)
Abstract [en]

Presently Sjöfartsverket do their maintenance according to a standard program, which means that every maintenance task will be done when the task limit occurs. This leads to a very long downtime for the aircraft in some occasions and very short downtime in others. The goal with this work is to reach a higher regularity of the aircraft operation. To reach a higher regularity for the operational needs, this work will present a hypothetic better maintenance concept for Swedish Maritime Administration. The concept is based on equalized maintenance structure, which means that every maintenance occasions are meant to take the same time to perform. This result will lead to easier planning and better maintenance overview of the aircraft operation. Different types of results have been presented depending on the size of the check cycle or if the engineering unit at the helicopter organization is going to use a reliability program in the future or not. Two with different types of check cycles and one, which can be considered as a future goal when a potential reliability program is in use.  


The work of the equalized maintenance structure takes airworthiness limitation tasks in consideration and put them as “drop outs” besides the check cycle itself because of the high criticality in those items.

Excel has been used to store and sort all the maintenance tasks, which are considered in this work, and pivot tables have been used to get an overview of the number of tasks in each interval. An aircraft reliability program has been suggested in the future due to the changes in escalation of intervals gives Sjöfartsverket the opportunity to optimize their equalized structure even further with less reduction of task intervals, a better task spread out and higher operational safety.

Place, publisher, year, edition, pages
2015. , 32 p.
Keyword [sv]
underhållsprogram, equalized, AW139, sjöfartsverket, AMP, agustawestland
National Category
Vehicle Engineering Aerospace Engineering
URN: urn:nbn:se:mdh:diva-28256OAI: diva2:820462
External cooperation
Subject / course
Aeronautical Engineering
Available from: 2015-06-30 Created: 2015-06-12 Last updated: 2015-06-30Bibliographically approved

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