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van der Weide, Tim (author)The MRO market currently spans around 9.5% of the total operating cost of an airline. Of this, 70% is covered by heavy-maintenance. Reduction of these costs and improving efficiency could, therefore, be significant for an airline. A possible solution is the optimization of the long-term schedule of heavy-maintenance checks. Current approaches...master thesis 2020
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Slangen, Bram (author)The long and therefore expensive training of aircraft maintenance technicians underline the need for accurate demand forecasts that allow for dynamic control of acquisition and training rate of personnel. This control enables human resource management to react swiftly to increases in workforce demand at times of technician shortages. To help...master thesis 2020
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Dalal, Aman (author)The global aircraft fleet was predicted to grow by approximately 40% between 2017 and 2027 by Oliver Wyman (2017). This fast-growing fleet needs to be supported by equally developing Maintenance, Repair, and Overhaul (MRO) divisions of airlines. In light of the growing need for more efficient and technologically advanced aircraft maintenance,...master thesis 2020
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Ruchser, Isa (author)Some aircraft damages require immediate attention. Typically, there are several alternative actions, resulting in varying outcomes. Application of MCDM was investigated to quickly choose the best scenario, as this is not always immediately apparent. In doing so, this research contributes to the state-of-the-art by a) considering alternative...master thesis 2020
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de Winkel, Eva (author)Tighter profit margins and rising aircraft complexity are currently driving the need for aircraft maintenance organizations to increase efficiency. Many organizations believe that digitization is key for improving operational performance. Digitization of the task allocation process at a large aircraft maintenance organization did unexpectedly...master thesis 2020
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Doğru, Anil (author), Bouarfa, Soufiane (author), Arizar, Ridwan (author), Aydoğan, Reyhan (author)Convolutional Neural Networks combined with autonomous drones are increasingly seen as enablers of partially automating the aircraft maintenance visual inspection process. Such an innovative concept can have a significant impact on aircraft operations. Though supporting aircraft maintenance engineers detect and classify a wide range of...journal article 2020
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Deng, Q. (author), Santos, Bruno F. (author), Curran, R. (author)This paper presents a practical dynamic programming based methodology to optimize the long-term maintenance check schedule for a fleet of heterogeneous aircraft. It is the first time that the long-term aircraft maintenance check schedule is optimized, integrating different check types in a single schedule solution. The proposed methodology...journal article 2020
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)When an aircraft experiences an unexpected issue during flight operations, a technician determines whether the aircraft can safely perform the next flight. This operational decision process - known as dispatch assessment - has to happen within limited available time between aircraft arrival and departure. Currently, technicians face two main...journal article 2020
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Woudenberg, Thijs (author)Margins for cargo airlines that were already thin have been put further under pressure, which stresses the importance of operating a profitable schedule. Research on modelling passenger operations has proven that integrating different steps in the schedule planning process can yield a significant increase in profit. For cargo operations no...master thesis 2019
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Sprong, Jorben (author)Maintenance providers in commercial aviation are looking into new strategies to improve maintenance operations and aircraft availability in order to reduce cost and increase customer satisfaction. Aircraft availability and thus profitability highly relies on adequate maintenance because an aircraft is only profitable when...master thesis 2019
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Dhanisetty, V.S.V. (author)There is a growth in the use of composites for the new generation of wide-body aircraft such as the Boeing 787 and Airbus A350. This shift from using aluminium as the primary material is motivated by the benefits of using composites in design, manufacturing and operations. Composites offer the aircraft manufacturer the ability to create more...doctoral thesis 2019
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)Delays are costly to airlines in both money and image. A significant number of delays is caused by unexpected technical failures of aircraft systems or components. These failures, if not dealt with efficiently, can cause disruptions in the flight schedule and network. The annual costs of these type of disruptions add up to an estimated cost...conference paper 2019
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Narayanan, Prasobh (author), Verhagen, W.J.C. (author), Dhanisetty, V.S.V. (author)Airline operators face accidental damages on their fleet of aircraft as part of operational practice. Individual occurrences are hard to predict; consequently, the approach towards repairing accidental damage is reactive in aircraft maintenance practice. However, by aggregating occurrence data and predicting future occurrence rates, it is...journal article 2019
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Spaan, Tessa (author)Aircraft maintenance is inherently unpredictable due to differences in failure rates between components. This results in high variance inflow in repair shops, which in case of insufficient capacity yields long turnaround times and thus the need for additional components in stock. The aim of this research project is to determine the effect of...master thesis 2018
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Narayanan, Prasobh (author), Verhagen, W.J.C. (author), Dhanisetty, V.S.V. (author)Airline Maintenance and Engineering (M&E) organizations face accidental damages on their fleet of aircraft as part of daily practice. As this type of damage is stochastic in nature, the approach towards repairing accidental damage is reactive in practice. However, it is possible to predict future long-term (strategic) demand for maintenance...conference paper 2018
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Wognum, Nel (author), Verhagen, W.J.C. (author), Stjepandic, J (author)The system concept is a widely-used concept in research and practice. Already in the 50s of the previous century, a community was created to investigate interrelationships between domains and create a theory surpassing and comparing domains. The General Systems Theory (GST) community has tried to come up with...conference paper 2017
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)The aircraft dispatch decision is a complex analysis based on many factors related to airworthiness regulations, aircraft health status, resource availability at current and future stop(s) and operational preferences of the operator. Within the turnaround time (TAT) a decision has to be made whether the aircraft can return to service, defects...conference paper 2017
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Verhagen, W.J.C. (author), Curran, R. (author), de Boer, L.W.M. (author)Costs associated with unscheduled and preventive maintenance can contribute significantly to an airline's expenditure. Reliability analysis can help to identify and plan for maintenance events. Reliability analysis in industry is often limited to statistically based approaches that incorporate failure times as...conference paper 2017
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Scherp, L. (author)Airline maintenance technicians (AMTs) often still rely on paper-based documentation when performing a task. In the limited time during unscheduled tasks, obtaining the right information from these documents can take up to 30% of the available time. To speed up this process, in this thesis it is explored how an automated system can be created...master thesis 2016
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Prins, G. (author)A case study on the Boeing 747 Integrated Drive Generator for predicting the remaining useful life (RUL) of the component. Real aircraft data is used with the neural network methodology for the prognostic model. Cost savings can be achieved by applying the model in aircraft maintenance.master thesis 2016