Historically, the assignment of training resources (instructors, aircraft, simulators, flight hours, etc.) to those units responsible for training Navy and Marine Corps aviators was based more on tradition than on quantitative, requirements-based analysis. This often led to a mismatch between the individual unit's annual training requirement and the resources that were at its disposal, resulting in under production or wasted resources. In the Fall of 1999, this process began to change. Under the direction of the then Commander, Naval Air Forces Pacific (CNAP) and the Navy's Director of Naval Aviation Manpower and Training (OPNAV N789), the Navy embarked on the development and deployment of a methodology that established quantifiable links between Fleet Replacement Squadron student training requirements and the resources required to train them. Developed using COTS software, the Production Planning Factor (PPF) tool enables Navy and Marine Corps aviation training units to not only identify their training resource requirements but also determine training capacity based on the resources actually available. This tool has formed a critical node in the development of integrated production plans across the various phases of the training process and directly contributed to an average 14 percent reduction in the time-to-train pilots since its inception. In addition, the number of pilots trained has increased from 91.3 percent of the "Fleet Requirement" in FY99 to 100.6 percent of the number of pilots required in FY03. This paper addresses the methodology employed in the development of the Production Planning Factor model as well as the linkage between the results of the tool and the training improvements noted above. Practical implications and concerns with the current tool's use and plans for future enhancements are also presented.