The rear fuselage was a wooden semi-monocoque which dropped down behind the cabin. The RB-50's tail unit was also all-wooden, with a cantilever tailplane mounted on top of the fuselage. The port elevator carried a trim tab. Its fin had a swept, straight leading edge, leading to a rounded top and an unbalanced rudder, also tapered with a slightly curved trailing edge and extending down to the keel. The tail wheel was strut-mounted to the extreme rear fuselage.
