The Douglas DC-7 is a retired American airliner built by the Douglas Aircraft Company from 1953 to 1958. A derivative of the DC-6, it was the last major piston engine-powered passenger aircraft made by Douglas, being developed shortly after the earliest jet airliner, the de Havilland Comet, entered service and only a few years before the jet-powered Douglas DC-8 first flew in 1958.
The Douglas DC-7 is a retired American airliner built by the Douglas Aircraft Company from 1953 to 1958. A derivative of the DC-6, it was the last major piston engine-powered passenger aircraft made by Douglas, being developed shortly after the earliest jet airliner, the de Havilland Comet, entered service and only a few years before the jet-powered Douglas DC-8 first flew in 1958.
Source: Wikipedia "Douglas DC-7" · CC BY-SA 4.0
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