The Douglas DC-7 is a retired American transport aircraft built by the Douglas Aircraft Company from 1953 to 1958.

The Douglas DC-7 is a four-engine long-range Airliner with a capacity of maximum 105 passengers produced by the US-American manufacturer Douglas Aircraft Company.

May 18, 2022 · Built by the Douglas Aircraft Company between 1953 and 1958, the DC-7 was a derivative of the DC-6, made to fly coast-to-coast across the US in as little as eight hours. The DC-7 was the last piston-engine powered plane built by Douglas, and no examples of the aircraft are still flying today.

weight and performance calculations for the Douglas DC-7C non-stop trans-atlantic airliner

It is a twin-row, supercharged, air-cooled, radial engine with eighteen cylinders, pushrod valves, two-speed single-stage supercharger, Chandler-Evans downdraft carburetor fuel system, and dry-sump oil system. It produces a maximum thrust of 3,250 horsepower each.

Douglas’ sales team’s job was made easy when they came to pitch its bigger brother DC-7; specifically the DC-7C long-range version which was being well-used by carriers such as SAS, Braniff, and Pan Am on their signature international services.

Nov 1, 2013 · The Douglas DC-7C Seven Seas. After Lockheed introduced the L1049G "Super G" Constellation for TWA, Pan American needed an aircraft that was able to fly non-stop transatlantic services, even westbound with average winds (their current DC …

May 7, 2021 · American Airlines introduced this low-wing airliner on November 29th, 1953. The legacy carrier flew it on a route between New York and Los Angeles. With this move, the company became the first operator to offer nonstop transcontinental service in both directions.

Feb 24, 2025 · The DC-7C Seven Seas was the last piston-engine airliner built by Douglas Aircraft Company, intended for non-stop transcontinental and transatlantic flights. The DC-7 combined the fuselage of a DC-6 with the wings of a DC-4.

This operational hurdle gave Douglas the impetus to develop the ultimate DC-7 model, the DC-7C `Seven Seas'. The DC-7C featured extra fuel capacity, a 3.05m (10ft) fuselage stretch and more powerful engines, and could cross the North Atlantic nonstop in either direction.