Folding wingtips will let the aircraft fit at existing airport gates while still giving the wings the lift they need. The new Boeing 777X features wingtips that fold up. You can see one of those in the upright position just behind the cockpit here. Boeing newest airliner, the 777X, is making its first flight Friday. A next generation model in the 26 year old 777 family, the 777X is the first commercial aircraft with fold up wingtips. Like Boeing 787 Dreamliner, the aircraft is made from...

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