Also known as landing gear, gear, aircraft undercarriage
aircraft part which permits takeoff and landing and supports the aircraft while not in the air
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The retractable main landing gear of a Boeing 747
Landing gear is the undercarriage of an aircraft or spacecraft that is used for engaging the surface — typically land, but may also be the surface of a water body — when parking, taxiing, takeoff or landing. It was also formerly called alighting gear by some manufacturers, such as the Glenn L. Martin Company. For aircraft, Stinton makes the terminology distinction undercarriage (British) = landing gear (US).
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