Five basic steps to problem trendingFive basic steps to problem trending evolved from experience in trending problems on Space Shuttle hardware are discussed: extracting data; constructing a Pareto chart of all failure modes; constructing normalized subsystem, component, and failure-mode trend charts; identifying trend direction; and providing a summary assessment. The five-step method has been useful for identifying failure modes of concern, evaluating the effectiveness of corrective actions, and determining funding allocation.
Document ID
19910046414
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bombara, Elwood L. (NASA Marshall Space Flight Center; Calspan Corp. Huntsville, AL, United States)