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Originally Posted by Michael Rychter
Would the first flight have been heavy to cause that bend or is that what we will become used to seeing with the flexible wing on the 787?
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The wings are designed to flex that much, although the upturned wingtips exaggerate the affect a little. The aircraft would've been fairly light compared to its planned MTOW. You'll see similar flex on the 747-8 as well.
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There seemed to be a (test) device streaming from the tip of the tail. What's that called and what is it measuring?
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It's a static pressure test probe - designed to provide backup altitude and airspeed figures in case the aircraft's pitot doesn't work.