[ajross]

You expect things stressed beyond limits to break where you expect them to, and the point of the test is to show that the failure modes are the expected ones. Having a door pressure seal fail explosively during an airframe stress test sounds to me very much like an UNexpected failure mode. That's bad.

[inferiorhuman]

It's doubly unexpected as, in theory, the 777X is just a variant of the 777, itself a plane that didn't blow its doors out under testing.

[dhimes]

in theory, the 777X is just a variant of the 777

Uh oh. Haven't we seen this story before with a different model (cough 737 cough)?