 Construction of the SIM-VIII employs several new construction solutions designed to reduce cost and streamline production, without compromising aircraft flight characteristics, built mostly of wooden construction with steel fittings at high stress areas.The fuselage is entirely made of wood covered with plywood, and the wings have supporting structure made of wood covered with fabric.On each side, the wings are supported by a pair of inclined struts attached to the lower fuselage longerons, and the fuel tank is also located in the centre fuselage.