A different approach to implementing PHM based RCM

The introduction of PHM based RCM has been a slow process and may be too big a step to be achieved in a single bound. We need an incremental way forward that deploys the elements of RCM founded on PHM such that each step is self-financing and lays the foundations for the next stage of deployment leading to a finished system and process. PHM based RCM is focused on the deployed equipment and its components: failure modes and progression, and assessing the equipment\´s current state. Much of the "barriers to entry" to PHM based RCM lie in the cost and time required to understand and validate the former, and the cost, complexity and dependability of the latter. However, this is but part of the problem. The integration of subsystem PHM system into the air vehicle, physically and as an integrated vehicle health management [IVHM] system, adds cost, weight and complexity, plus introducing its own issues of reliability and maintainability. Additional acquisition and operating costs are needed to create the total system sustaining the embedded IVHM provisions, encompassing the operational base(s), depot(s), operational command, program office, logistical support and the prime contractor and subordinate supply chain organizations. (Here considering a military platform.) A key perspective is that IVHM is a dynamic and evolving process throughout the service life of the platform, not fully qualified and fixed embedded provisions. As a result ongoing involvement of operational, maintenance, technical support, and engineering design and development organizations is required throughout platform service life, actively managed by the responsible program office in a total life cycle systems management (TLCSM) process. This paper proposes a structured plan to define, develop and deploy the total PHM based RCM process and system in stages, each stage building on the former but otherwise paying its way while enabling and facilitating the next stage of deployment. This perspective is app- - lied to IVHM implementation for both existing platforms and new developments as its most challenging and rewarding application.