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In page Boeing 727:

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A later 727 model, the 727-200, was stretched by 20 feet (6.10 metres) to carry 58 more passengers[10]: 74–75  and replaced earlier jet airliners on short- and medium-haul routes such as the Boeing 707 and Douglas DC-8, as well as aging propeller airliners such as the DC-4, DC-6, DC-7, and the Lockheed Constellations.[citation needed]