This thesis pertains to the development of more accurate scheduling estimates for a typical fleet of large test airplanes in the 200 ton class. The need for scheduling accuracy assumes importance because a schedule reflects manpower requirements to accomplish a project, and competitive cost proposals are based, in part, upon such data. Hence, a poor estimate could very well result in detrimental financial consequences. Such a relationship between the original estimate and ultimate profit or loss would imply a requirement for intensive study effort in formulation· of the estimate. In actuality, however, such study effort cannot normally be accomplished because of lack of program details on the one hand, and pressures of short time deadlines for proposal submittal on the other.