...Boeing may decide not to stress the Dreamliner's plastic wings until they break.
"A decision has not yet been made to fully break the wing," said Scott Strode, vice president of 787 production. "We are still working on that."
There is no requirement that the wing actually be broken as part of the stress testing, Strode pointed out.
...Boeing and its 787 partners -- including Mitsubishi Heavy Industries, which manufacturers the 787 wing in Nagoya, Japan -- have been doing structural testing of a 787 wing for more than a year...Strode disclosed that Boeing already has stressed that wing to the required 1.5 times the limit load -- and it did not break.