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 mail plane.
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 undercarriage was of the axle-less type.
Span: 31 ft 0 in (9.45 m)
Length: 24 ft 0 in (7.32 m)
Height: 9 ft 1 in (2.77 m)
Wing area: 285 sq.ft (26.48 sq.m)
Empty weight: 1,253 lb (568 kg)
Useful load: 910 lb (413 kg)
Fuel and oil: 270 lb (122 kg)
Pilot: 180 lb (82 kg)
Payload: 480 lb (218 kg)
Total weight: 2,163 lb (981 kg)
Wing loading: 7.6 lb/sq.ft (37.05 kg/sq.m)
Power loading: 24 lb/hp (11 kg/hp)
Max speed (OX-5): 99 mph (159 kmh)
Max speed (C-6): 120 mph (193 kmh)
Max speed (Whirlwind): 129 mph (208 kmh)
Landing speed (OX-5): 42 mph (68 kmh)
Climb (OX-5): to 5,000 ft (1,524 m) 14 min 30sec
Climb (C-6): 1,100 ft (335 m)/min
Climb (Whirlwind): 1,275 ft (389 m)/min
Endurance: 6 hr."