AEROSPACE GUIDANCE AND METROLOGY CENTER NEWARK AFS OH
This paper examines the economic, and other pertinent logistic factors of a maintenance concept that always rebuilds units completely ARUC, versus one that diagnoses and repairs as necessary DARAN. The examination of these two maintenance approaches is made by constructing a mathematical cost model, and then exercising this model under a large number of widely varing conditions. For this model, it was found that under most of the conditions examined, that the diagnose and repair as necessary DARAN maintenance concept was preferable to a concept of always rebuild units completely ARUC. For systems with more than two subsystems examined in this study, this is even more likely to be always true. The paper then explains why the Diagnose and repair as necessary DARAN approach to maintenance, even though it is usually the most effective approach, is not used more often and more fully. The reasons explained primarily involve the over influcence of designerproducer viewpoints and approaches of those that specialize in maintenance, particularly those specializing in diagnose and repair as necessary DARAN approach. Author
Presented at the Data Exchange for Inertial Systems (4th), Los Angeles, Calif. 4 Aug 71.