Abstract
Initial Maintenance Review Board Report (MRBR) uses in service operation experience as a reference to define maintenance tasks intervals. However, in general, there is no structured data to compare systems performance and provide useful information to the analysts’ decision-making. Even when engineering judgment is based on certification process, structural design, components intrinsic reliability and so on, the analysts responsible for maintenance tasks definitions tend to choose rather conservative proposals. This article presents a method to optimize preventive maintenance tasks intervals and use structured data based on interval optimization process to defi ne maintenance intervals to those of similar systems under development. The method has been applied in an aircraft manufacturing company using current operation database after regulatory authorities’approval. As a result, it has been feasible to propose to the selected system, a maintenance task interval 100% higher than the one applicable to a similar system under operation.
Highlights
In the current economic scenario, to offer products with integrated services in a higher quality became a differential competitiveness factor among the companies
This study presents a method to evaluate preventive maintenance tasks intervals previously defined in aircraft development phase, organize database available to customer support, evaluate data and propose reviewed maintenance tasks intervals similar to those of aircraft systems under development
The presented procedure to achieve the objective of optimizing maintenance task intervals and defining more accurate intervals to new aircraft under development is more comprehensive and accurate than the ones currently available in the market
Summary
In the current economic scenario, to offer products with integrated services in a higher quality became a differential competitiveness factor among the companies. Preventive maintenance is placed as a regulation to assure physical integrity to citizen in flight or on ground and it is an extended part of the product, which can be defined as a combination between product itself (material) and related services (Seifert et al 2011). In the aeronautical industrial sector, to establish adequate maintenance tasks intervals represents Direct Maintenance Cost (DMC) reduction and, as a consequence, higher customer satisfaction after fleet entry into service. This study presents a method to evaluate preventive maintenance tasks intervals previously defined in aircraft development phase, organize database available to customer support, evaluate data and propose reviewed maintenance tasks intervals similar to those of aircraft systems under development. The purpose of the method is to reach tangible results (DMC reduction) in the short term and intangible results (customer satisfaction, market recognition) in the middle term
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