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Boeing faces fresh safety questions after engine fire on flight from Scotland
(www.theguardian.com)
this post was submitted on 18 Jul 2024
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Boeing doesn't make engines.
Yup, most engine manufacture is undertaken by specialists. As a good example, Rolls-Royce is an airplane engine company that sometimes makes cars as publicity stunts.
HOWEVER.
It's not just about who makes engines. Aircraft are meant to last a good 30 years in service and you can't just ask some schmuck to clean it for $7.50 an hour and call that maintenance. Maintenance is extremely skilled work that tends to be operating under horrible time crunches, especially if a part is suspect and needs to have a plane partially taken apart so it can be changed for a fresh one- a plane that might be due to fly again tomorrow. Maintenance that needs that sort of knowledge tends to have some involvement with the parent company who built the planes, or is even contract work for them.
Boeing is rather notorious for being willing to put the schedule before safety- we've seen that in a lot of other accidents. I would absolutely believe that a Boeing manager skimped on engine maintenance because someone in the chain of command said "Get that plane out of the maintenance hangar today or you're fired, and damn the safety regulations."
But, that's just my industry knowledge. The actual circumstances could be way different, so let's go read the article.
OK, checking out the article, actually it seems totally innocent on the maintenance side of things- there was a turbine blade fracture during flight. Turbines are generally very reliable but it's a gargantuan pain in the ass to test those blades because they're crystalline structures, so a fracture goes from nanoscopic to taking out the whole blade all at once. I wouldn't expect maintainers to catch that.
The criminal part is actually way more interesting and concerning.
Civilian aircraft are built to be safe. I mean REALLY safe. Every system has a redundant (backup) system you can switch to if that system goes down and a way to isolate a damaged system. Planes can fly on only one working engine, or even safely glide down to the ground if they have no engines. We literally blow some engines up in their final stages of testing to make sure they can't blow up hard enough to take the wing out. Regulations demand it.
So that's why this is a criminal case. Because after that engine blade came loose and hit the wing, it ruptured a fuel line...
In an aircraft that was designed in compliance with regulations, while this would still be be cause to turn around and land the plane, it shouldn't actually be a safety problem at all. Just isolate the damaged system and switch to the redundant one. And they didn't have the ability to do that. Meaning that their aircraft design itself is likely out of compliance with regulations and doesn't meet the minimum safety requirements to have civilians on it. Which is... honesty way weirder, because who the hell signed off on this thing if it had a design issue like this?
What page did you see those details on in the report? I skimmed it between meetings and will look again later.