I don't know about you, but in my industry, "QA" also means extensive testing to ensure that part/assembly/etc doesn't break with expected operations. So, yeah,

I don't know about you, but in my industry, "QA" also means extensive testing to ensure that part/assembly/etc doesn't break with expected operations. So, yeah, from where I'm standing, this was a QA problem. Something did not get checked or tested as it probably should have.