The FAI/CIAM Scale classes involves the art of illusion, that is to create and build a model of a full size aircraft and to fly this model in a manner that to the best of the modelers ability illustrates the way the full size aircraft flew. This require research into the history of the original, craftsmanship in both technical drawings and in building of the model and further precision in controlling the model while going through the maneuvers typically for the full size aircraft. More