$400m 777-9X has a wingspan so big the tips have to be folded up so it can fit into airports

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The 777-9X will seat at least 400 passengers with a superwide cabin with larger, higher windows when it begins production in 2017.
 It is set to be the biggest passenger plane ever seen – with a wingspan so big the tips have to be ...
$400m 777-9X has a wingspan so big the tips have to be folded up so it can fit into airports