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Why could the Douglas C-54 Sacred Cow use more airports than the Boeing 314 Clipper?
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Air Force One
Air Force One, a Boeing 747 reserved for use by the president of the United States, flying over Mount Rushmore, South Dakota.
The Douglas C-54 Sacred Cow could utilize a wider variety of airports than the Boeing 314 Clipper because it was a land-based transport plane, whereas the Clipper was a flying boat.1
As a flying boat, the Boeing 314 required bodies of water for takeoff and landing, which significantly limited its operational flexibility. In contrast, the C-54 was based on the DC-4 civil airliner and was designed to land at any sizable airfield in the world. This land-based capability allowed the C-54 to provide more versatile transportation for presidential travel during the World War II era.1