Then, engines are attached to the wings. Airliners are able to fly long distances around the globe with only two engines thanks to gigantic, efficient power plants like the 777's <a href='http://www.geaviation.com/engines/commercial/ge90/ge90-115b.html' target='_blank'>GE90-115B</a>, described by Guinness as the world's most powerful commercial jet engine.
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