A two-phase effort was conducted to design and evaluate a maintenance simulator which incorporated state-of-the-art information in simulation and instructional technology. The particular equipment selected to be simulated was the 6883 Convert/Flight Controls Test Station. Phase I included a generalized block diagram of the computer-trainer, the functions involved, and an evaluation design yet to be finalized. Phase II dealt with the data concerning the training capabilities and potential of the 6883 simulator. Imagetics, an evaluation technique, was investigated for use. (Imagetics was defined as a method of developing and testing the degree of a student's ability to develop and retain a mental image by causing the student to record responses indicative of the image development in a manner such that the responses are not immediately visible to the student.) Moreover, plans were made during the evaluation to develop and validate a set of Imagetics materials against an actual job sample and to assess the effectiveness of using imagery as a training technique. This two-phase effort resulted in future plans to use the 6883 as a research vehicle to determine where, when, and how much simulation is necessary in Air Force training for the maintenance and operation of certain test equipment. (Also included in this report are an introductory discussion covering definitions of simulation systems, reasons for using simulation, the relationship between the training equipment and psychology, and the status of simulation.) (VB)