A Technique for Apportionment of Quantitative Maintainability Goals

This paper describes a systematic approach for apportioning the mean corrective times (Mct) of equipment, based upon a technique employing maintainability features, usage, and reliability data. Weight (K) factors are assigned commensurate with the eauipment´s importance to the system´s mission and the design features necessary to maintain the equipment within the customer´s constraints. Each item of equipment is evaluated in accordance with apportioned reliability data and the degree of maintainability incorporated in the conceptual designs. The technique yields values that can be met by diligent application of maintainability principles during equipment design.