Maintenance Planning plays a vital role in optimizing the benefits of Integrated Vehicle Health Management (IVHM). The challenge is to identify the right combinations of different types (Preventive, CBM and Run-to-Fail) of maintenance tasks for different subsystems or components of complex systems like an aircraft to achieve the most optimized solution in terms of availability, cost and safety. Maintenance Strategy plans most cost effective maintenance type for each fault of a sub-system in such a way that availability and safety are optimized. Also, the strategy should satisfy the important goals viz. technical feasibility and certifiability of the solution. This study presents a RCM based maintenance strategy framework with some modifications over the existing guidelines. The framework has been implemented and is demonstrated with a case study of EPGDS (Electrical Power Generation and Distribution System). The results with arbitrary costing for each task are outlined with the objective of demonstrating the effectiveness of the framework.
Aircraft readiness management plays pivotal role for aviation authorities to enhance mission availability, reliability and reduce maintenance cost. This has been the focus area of the industry for many years now. This paper focuses on developing an approach for maximizing the aircraft readiness based on the Aircraft Health Assessment and a novel approach for Maintenance Planning. Anintegrated solution using results from Prognostic Health Management (PHM) functions has been proposed. The concept is based on the condition based mission planning, operational risk assessment, maintenance planning and supply chain management. Also an insight is provided into the systematic approach to derive maintenance strategy leading towards certification. Although, the solution can be used for both commercial and military aviation, the focus in this paper is on implementation for military platforms. Details on implementation are discussed in brief and theresults of this implementation on some hypothetical scenarios are presented. The results outline the effectiveness of the approaches in improving the aircraft readiness.
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