There were two open cockpits, the pilot was seated in the front cockpit, with one passengers on his right. The back cockpit accommodated two passengers side-by-side and was very roomy. A baggage compartment, with room for two suitcases, was provided, and if desired the rear cockpit could be transformed into a mail compartment of more than the capacity of the standard de Airco D.H.4 mailplane.
The engine mounting was quickly detachable, and provision was made for fitting the 160 hp Curtiss C-6 or the l80 hp Hispano-Suiza in place of the OX-5. The 200 hp Wright Whirlwind engine could be installed by the substitution of a slightly modified mounting.
The wings were of the unstaggered, single-bay type and the landing gear was of the axle-less type."