CAE-Link Corporation was awarded the contract in 1987 to develop and implement a ground-based training system for C-130 aircrew members. The Military Airlift Command and the Armstrong Laboratory recently sponsored an analysis, conducted by the Systems Research and Applications Corporation, to ascertain this new system's impacts on training costs and effectiveness. This paper analyzes the available cost and training effectiveness data generated by the old and new aircrew training systems, describes the cost-effectiveness analysis model developed for this project, and estimates the cost and effectiveness impacts of the new system. Outputs (training objectives, numbers of graduates, and proficiency levels of graduates) were found to be similar across the two systems. The ATS lowered total training costs given current student flows. However, the relative cost-effectiveness of the ATS and pre-ATS alterntives would be strongly affected by changes in the number of graduates produced.