Boeing issued a bulletin to its suppliers late last week that laid out practices to ensure bolts are properly torqued after multiple airlines reported loose hardware during inspections of the grounded 737 MAX 9,
My dad spent years working on a jet engine component. He’s retired, but told me he paid attention to the field, and breathed a sign of relief when the part he’d worked on was eventually phased out in favor of newer tech, and is no longer in use anywhere. Not because there was anything wrong with the component, but he just wanted to make sure he wasn’t part of a plane coming down.
One video I saw said that when Spirit delivers the fuselages to Boeing they intentionally don’t fully install the door plugs because the final configuration (whether the position has door plugs or actual doors installed) may change at the factory depending on customer needs. And clearly it’s Boeing’s responsibility to check things like that either way. This is 100% on Boeing.
As much as i’d like to blame other than the ‘original’ Boeing shops, it appears the problem was right there. They, in turn, are apparently going to blame Covid and staffing issues (as well as the on-going hint at “the older generation engineering experience isn’t available in the next generation…”??) Here’s today’s Seattle Times article which blames ‘Renton’ …Renton being one of the fairly original Boeing sites. -sigh-
The takeaway appears to be that outsourced plane components have so many problems when they show up at the production line that Boeing’s quality control staff can’t keep up with them all.
The Boeing QA writes another record in CMES (again, the correct venue) stating (with pictures) that Spirit has not actually reworked the discrepant rivets, they just painted over the defects.
Back when I was getting my MBA, Boeing’s 737Max was already a case study for how to fuck up a massively complex project. Instead of building large new facilities to make key parts, entire sub-assemblies were built around the world, wherever Boeing already had factories, and shipped to Everett for assembly. As a result, there were constant issues with things not quite matching up because of different measurements, tolerances, standards, etc. at the different source facilities.
All Boeing and it’s subcontractors need to do is replace its workforce with the people who work at tire shops. Those people know how to make sure you can never ever get the bolts (well ok pedants lug nuts) off.
We watch Air Disasters all the time, I could never be an airplane mechanic because I’d be terrified I missed something that would hurt or kill someone.
I have keys and alarm codes to quite a few places and a couple private homes. I can’t tell you how many times I get dressed in the middle of night and go check on some place because I can’t remember if I locked a door or set an alarm or left something on.
I can’t imagine waking up worried but instead of a lock I couldn’t remember if I tightened a bolt on the wing of an airplane.