MAINTAINABILITY PREDICTION THEORETICAL BASIS AND PRACTICAL APPROACH

摘要

Methods for procuring maximum value from airborne electronic equipment were studied. The theory behind the maintainability prediction technique is summarized, and several refinements are introduced in the report. The most significant of these is the prediction of initial delay. The introduction of this latter technique permits predictions of the distribution of total system down time due to malfunctioning equipment. It uses measurable aspects of the equipment to predict the probability of occurence of certain Elemental Activities. The probabilities and the observed times required for their performance are combined, according to a series of combinational relationships, to produce larger and larger categories of maintenance time and, finally, a distribution of total system down time. The technique, developed for airborne electronics equipment, is applicable primarily to equipments and systems used under the Air Force general maintenance policy and only at the flightline level. However, the research approach and the basic relationships developed should provide for a degree of general application. Sample predictions are made for several systems, and the results of some of these verification studies are included. (Author)