Re:Door blows off Boeing 777X during stress test
by skellington on Saturday September 07, 2019 @09:26AM
(#20903626)
Maybe you're not reading his quotes carefully enough. The wing failed at 146% of max design load which was BELOW the required failure limit of 150% which caused Airbus to add more structure to strengthen the wing.
QUOTE: Since manufacture of the initial wingset used in the tests, Airbus has refined the design, which will be slightly different on production rigs as a result of continued development, according to the European manufacturer. One factor may have been that earlier A380 weight-saving exercises had left no margin for error in the formal static load tests.
https://www.ainonline.com/aviation-news/air-transport/2006-1...
QUOTE: Since manufacture of the initial wingset used in the tests, Airbus has refined the design, which will be slightly different on production rigs as a result of continued development, according to the European manufacturer. One factor may have been that earlier A380 weight-saving exercises had left no margin for error in the formal static load tests.