When an aircraft is thought as a final product, it has a complex structure with numerous parts to be managed. Complexity requires multifunctional design activities, and multifunctional design needs collaborative way of working for continuous success. This cooperated approach could only be accomplished by the help of concurrent engineering techniques. Currently, several distinctive design activities are performed at digital environment of CAD tools. Position information and interrelations between parts of a product are provided by the help of associative physical CAD links. Requirement of CAD links during design activities paves the way for the usage of Master Geometry models as an official source of aircraft shape and a geometrical reference for all actors involved. Master Geometry models have to be managed in Product Lifecycle Management tools in order to provide effective implementation and usage of models from conception, through design and manufacture, to service and disposal of product. Some improper cases could be observed when a correlation is tried to be generated between Master Geometry models and 3D models of product at CAD environment. In this paper, these cases will be examined and potential solutions, which are the results of lessons learned activities, will be proposed with concrete examples.