Both wings were rectangular in plan out to blunted tips and had constant, thick sections; they were built around twin spruce and plywood spars and fabric covered.

[1] The fuselage of the Senior was a welded steel tube frame, its forward part covered with light metal and the rear with plywood.

[1] The rear surfaces of the Senior were large, with a rectangular, strut-braced tailplane mounted on top of the fuselage carrying elevators hinged at the end of it.

[1] The Senior's landing gear was fixed and conventional with wheels, well apart, on a single axle held on two V-struts; the forward struts of the Vs contained shock absorbers.

For night landings a pair of searchlights in streamlined housings were attached below the lower wings, under the feet of the interplane struts.