Eliminating 'can not duplicate' and 'excessive trouble-shooting' diagnostic actions

The application of a reliability and maintenance (R&M) figure of merit is reported. The figure of merit is known as the expended maintenance importance ratio (EMIR). It relates reliability and maintainability in a single value. It is shown how to use the EMIR in predicting R&M costs and how, with data reduction techniques, to identify specific improvements. Examples developed from historical data of aircraft are reported.<
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