Propliner

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A propliner is a large, propeller-driven airliner. Typically, the term is used for piston-powered airliners that flew before the beginning of the jet age, not for modern turbine-powered propeller airliners. Propliners featured all-metal wings and structural members, retractable landing gear, and generally two or more engines.

The first propliner was the Boeing 247 (1933), with the Douglas DC-1 and DC-2 closely following. The most successful is the Douglas DC-3, which was produced in the thousands, and is still in widespread use. Other propliners included the DC-4, DC-5, DC-6, and DC-7; the Lockheed Constellation and Starliner; and the Boeing Stratocruiser.

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