Powerplant: 2 × Pratt & Whitney R-1860-11 Hornet B radial engine, 600 hp (448 kW) each
Maximum speed: 188 mph (302 km/h, 163 kn) at 6,000 ft (1,830 m)
Cruise speed: 165 mph (265 km/h, 143 kn)
Range: 540 mi (869 km, 470 nmi)
Service ceiling: 20,750 ft (6,325 m)
Rate of climb: 900 ft/min (4.6 m/s)
Guns: 2× .30 in (7.62 mm) machine guns
Bombs: 2,260 lb (1,030 kg) bombs
Boeing model B-215 / YB-9 – Pratt & Whitney R-1860-13 Hornet B (575 hp), Re-engined with supercharged Pratt & Whitney R-1860-11 Hornet B (600 hp) and was fitted with three-bladed propellers, Trim tab ran the full height of the rudder.
Boeing model B-214 / Y1B-9 (one produced) Curtiss GIV-1570 Conqueror (Curtis V-1570-29 Conqueror) (600 hp), Re-engined with supercharged Pratt & Whitney R-1860-11 Hornet B (600 hp) and was fitted with three-bladed propellers, Short trim tab on rudder.
Boeing model B-246 / Y1B-9A (five produced) Pratt & Whitney R-1860-11 Hornet B (Y1G1SR-1860B) (600 hp), Metal instead of fabric covering on the control surfaces, There were also many internal structural and equipment changes