General characteristics Crew: 4 (pilot, co-pilot, navigator, radio operator) Capacity: 28 troops Length: 63 ft 9 in (19.43 m) Wingspan: 95 ft 6 in (29.11 m) Height: 17 ft 0 in (5.18 m) Wing area: 987 sq ft (91.7 m2) Airfoil: root: NACA 2215; tip: NACA 2206[25] Empty weight: 18,135 lb (8,226 kg) Gross weight: 26,000 lb (11,793 kg) Max takeoff weight: 31,000 lb (14,061 kg) Powerplant: 2 × Pratt & Whitney R-1830-90C Twin Wasp 14-cylinder air-cooled radial piston engines, 1,200 hp (890 kW) each Propellers: 3-bladed constant-speed propellersPerformance Maximum speed: 224 mph (360 km/h, 195 kn) at 10,000 ft (3,000 m) Range: 1,600 mi (2,600 km, 1,400 nmi) Ferry range: 3,600 mi (5,800 km, 3,100 nmi) Service ceiling: 26,400 ft (8,000 m) Time to altitude: 10,000 ft (3,000 m) in 9 minutes 30 seconds Wing loading: 26.3 lb/sq ft (128 kg/m2) Power/mass: 0.0926 hp/lb (0.1522 kW/kg)