The Lockheed R6V Constitution was a large, propeller-driven, double-decker transport aircraft developed in the 1940s by Lockheed as a long-range, high-capacity transport.
Only two of the aircraft were ever built, both prototypes.
Although these two planes went into service with the Navy, the Constitution design ultimately proved underpowered and too large for practical airline use at the time.
Although the Martin JRM Mars flying boat had a slightly longer wingspan, the Constitution remains the largest fixed-wing aircraft type ever operated by the U.S. Navy.
Specifications
Crew
12
Capacity
168 passengers
Length
156 ft 1 in (47.6 m)
Wingspan
189 ft 1 in (57.6 m)
Height
50 ft 4.5 in (15.4 m)
Wing area
3,610 sq ft (335.4 m2)
Empty weight
113,780 lb (51,610 kg)
Gross weight
160,000 lb (72,600 kg)
Max take-off weight
184,000 lb (83,460 kg)
Powerplant
4 × Pratt & Whitney R-4360-22W radial engine, 3,000 hp (2,240 kW) each
