A data analysis confirms that the Boeing 787’s composite wing can withstand a load 1.5 times greater than the most extreme forces the airplane is expected to experience in commercial service. The March 28 test was conducted on the ZY997 static test article at Boeing’s Everett, Wash., factory and involved simultaneous downward pressure on the fuselage while the wings were bent upward. After pressurizing the airplane to 150% of normal, the test team took the wings to a 120% load level, ...

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