C-121G "Constellation" Dates assigned: 1963 - 1972 Crew: 5 flight crew, varying cabin crew Capacity: typically 62-95 passengers (109 in high-density configuration) Length: 116 ft 2 in (35.42 m) Wingspan: 126 ft 2 in (38.47 m) Height: 24 ft 9 in (7.54 m) Wing area: 1,654 ft² (153.7 m²) Empty weight: 79,700 lb (36,150 kg) Useful load: 65,300 lb (29,620 kg) Max takeoff weight: 137,500 lb (62,370kg) Powerplant: 4× Wright R-3350-DA3 Turbo Compound 18-cylinder supercharged radial engines, 3,250 hp (2,424 kW) each Maximum speed: 377 mph (327 kn, 607 km/h) Cruise speed: 340 mph (295 kn, 547 km/h) at 22,600 ft (6,890 m) Stall speed: 100 mph (87 kn, 160 km/h) Range: 5,400 mi (4,700 nmi, 8,700 km) Service ceiling: 24,000 ft (7,620 m) Rate of climb: 1,620 ft/min (8.23 m/s) Wing loading: 87.7 lb/ft² (428 kg/m²) Power/mass: 0.094 hp/lb (155 W/kg) Cost: $2,647,000 Armament: none