The FAI F4 class links the community of scale aeromodellers in indoor and outdoor classes.
To some modellers accustomed to using the advancing technology associated with radio controlled flight, the idea of operating a model without these controls may seem puzzling. Even the established free flight classes for which FAI rules have been developed, have become increasing technical in the design of airframes and in the materials used. These classes now seem a long step away from the early free flight classes, in which part of the challenge was in the designing and building of models for local and international competition, as in Wakefield rubber endurance class for example.
Download the full content of the latest CIAM Flyer (01-2016) - International classes for free flight scale model flying competitions around the world in PDF format !