Iteration is an inherent component of any design process. It is a very important characteristic since it influences product development cost and time. In this paper, an experiment is used to make observations about iterations in a geographically distributed design process. Our objective is to understand how and why iterations occur in the design process. This investigation will help us in the classification of iterations in order to distinguish useful iterations from negative ones. The results of such work could be used to improve assumptions adopted to develop engineering design models, which is very helpful in design planning. We provide a brief review of some design models integrating the iterative aspects of engineering design. After describing the experiment environment, the research method is presented, and observations are then analyzed.