Instructional Systems Development (ISD) in the military has traditionally either been performed in-house or by an independent contractor. Historically, prime airframe manufacturers have neither had the interest nor the technical capabilities to provide this service. Based strictly upon the technical requirements for conducting ISD for an emerging weapon system, however, the airframe manufacturer is in a unique position to concurrently design and develop training in parallel with the aircraft. He has ready access to the technical data, engineering specification and design inputs much earlier than any outside agency. His ability to collect performance data and determine system configuration can expedite the development of training devices specifications thus insuring that devices are delivered in time to begin initial aircrew training. Additionally, training requirements can be considered early enough to be integrated into the design process and actually impact the final system configuration. With the emergence of a "total systems approach" mandated by OMB Circular A109 and DOD 5000.1 and .2, this ISD capability is being developed by the airframe industry and should be considered as an integral part of the prime's responsibility during Full Scale Development.