This document discusses the importance of equipment experts in applying Reliability Centered Maintenance (RCM) when historical failure data is lacking. It states that while historical data is useful for identifying problem areas, it does not provide all necessary failure information. Equipment experts possess valuable knowledge about potential failures, failures prevented by current maintenance, and how failures impact equipment. An RCM analysis should utilize a facilitated working group approach to capture the expertise and experience of equipment experts to develop an effective maintenance plan.