This and the parent comment has to constricted view of QA in aerospace. Yes, manufacturing quality is a big part. And yes, it’s possible that new manufacturing

This and the parent comment has to constricted view of QA in aerospace. Yes, manufacturing quality is a big part. And yes, it’s possible that new manufacturing processes like additive manufacturing can streamline the QA. But the part being missed is all the downstream QA. Those welds still need to be inspected. Any soldering needs to be inspected to the J-STD. The materials still need to be kept in an environmentally controlled environment. The materials still need samples kept, for possibly decades, in a similar manner in case something is found wrong later. All this requires administrative overhead like a chain of custody etc. That isn’t cheap.