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How heavy is an airplane engine?

The weight of an aircraft engine varies greatly depending on the size and type of engine. Piston engines, which are used in smaller aircraft, typically weigh between 100 and 200 pounds. Turbofan engines, which are used in larger aircraft, can weigh anywhere from 1,000 to over 10,000 pounds. The largest aircraft engines, used on commercial airliners such as the Boeing 747 and Airbus A380, can weigh up to 25,000 pounds.