An evaluation was made of the training effectiveness of two cockpit procedures training devices, differing greatly in physical fidelity and cost, for use on the ground for a twin-engine, turboprop, fixed-wing aircraft. One group of students received training in cockpit procedures in a relatively expensive, sophisticated, computerized trainer, while another group underwent training in an inexpensive, low-fidelity mockup of the aircraft cockpit. Their subsequent performance in the actual aircraft was compared with that of a control group who received all their procedures training in the aircraft. Results indicated that both training devices produced significant transfer of training in terms of reduced errors and training time. Despite their great differences, the two devices showed no significant differences in effectiveness. Implications for training device design and associated training programs were discussed. (Ten references and 18 figures and tables are included.) (Author/LY)