Comment by skywhopper

The idea that an operation of Boeing’s size would not have the resources or wherewithal to spot check their suppliers on this sort of thing is just silly. The folks squeezing Boeing’s margins should know their suppliers are doing the same thing, and be suspicious of them. Either those folks were in on it with the suppliers or they just didn’t care about their own product’s quality. I’m not sure which I think is more likely. But either explanation is criminal negligence for this type of product.