Securing bolts properly is about the lowest-hanging fruit of high-reliability engineering.
Great article. The most concerning is that Boeing has become yet another enshittified company, chasing profit too hard over all else, and they are going to kill people with their decisions.
“The fact that the mistake was made at all, however, suggests an organization that is decreasingly inclined, or able, to make the kinds of costly, counterintuitive, and difficult-to-justify choices on which it built its exemplary history of reliability. These choices always pertain to marginal, almost negligible, concerns — simply because reliability at high altitudes is all about the margins — so their consequences manifest slowly. But their effects are cumulative and inexorable. “