The feasibility and effectiveness of teaching performance skills using a computer-based training (CBT) methodology were investigated. Graphic simulations of the appearance and functions of a system in an anti-submarine aircraft were presented to students within an instructional framework. Programmed logics controlled the dynamic representations of the equipment in response to student input made through a touch panel. The objective was to determine whether CBT could be used for low cost, part-task training. The performance of CBT students, as measured on a high fidelity simulator, was compared to that of students who had gone through conventional training consisting of workbook study and hands-on practice in the simulator. Results showed that CBT students performed the necessary skills as well before practice in the simulator as conventionally trained students could after this practice. The theoretical and cost implications are discussed.