Boeing bent a 787’s wings up 7.6 m on purpose

In a 2010 ground test, Boeing loaded a 787’s wings to 150% of the worst forces expected in service; the tips rose about 7.6 m and the wings held.
Rules require 1.5 times the limit load, held at least 3 s; the top skin squeezes, the bottom stretches. Flight photo: Tomás Del Coro, CC BY-SA 2.0 (creativecommons.org/licenses/by-sa/2.0), Wikimedia Commons.
Sources: Boeing release 7 Apr 2010 · 14 CFR 25.303 and 25.305 (eCFR) · boeing.com/commercial/787 #shorts

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