 The aircraft's fuselage was of wooden construction, and was carefully streamlined to reduce drag.Although it has been sometimes claimed to be of monocoque construction, the fuselage was in fact built around a wooden box girder, with formers fitted around the box girder to give the desired shape and skinned with plywood.The pilot sat in a cockpit under the trailing edge of the upper wing; unusually for the time, a transparent canopy made out of celluloid to fit the cockpit was made, but pilots refused to fly with it fitted and the canopy was never used.