Formal measuring devices used to ascertain the training success and promotion potential of maintenance personnel have been deficient in the area of job realism. In part, this may be due to reliance on paper and pencil testing rather than the use of effective job performance measurements. Data concerning job performance measurements applicable to Air Force electronic maintenance were collected, structured, and analyzed. As a result of this analysis, it was recommended that comprehensive exploratory and advanced development efforts concerning Air Force maintenance should be established and funded. These programs should systematically and comprehensively identify and solve problems concerning maintenance practice in the field and problems concerning the selection and training of maintenance personnel. A necessary first effort should be to gather and study hard data on how well maintenance men can perform the key tasks of their jobs. Also, based on the results of this analysis a contractual effort was initiated to develop criterion referenced JTPT for electronic maintenance tasks. This effort was followed by an attempt to develop both graphic and video symbolic substitutes of improved empirical validity. (Author/BJG)