The technical manuals preparation process needs to ensure consistency with the as-built configuration, and readability comprehension by the ultimate user. The technical manual process involves translating engineering work and design analyses (including logistics support analysis) into an operations and maintenance information system. Technical manuals must reflect the design of both the prime items and support equipment and are becoming embedded in both as more items become computer/ microcomputer controlled. With the ability to change equipment operations via software changes, there is a real need to closely tie the design/ design change process to the technical manual preparation and change process. The use of CAD/CAM databases in the technical manual process provides this link. Their use improves both accuracy and preparation efficiency.