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United finds loose bolts on plug doors during 737 Max 9 inspections

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Re: United finds loose bolts on plug doors during 737 Max 9 inspections

#11
post #5

Given that these are plug-style doors even if these were bolts in the hinges it would not risk the integrity of the fuselage seal.

Maybe the plugs aren't flanged enough? If the walls are mostly flat you could see the bolts being load-bearing.

My money is on the window. It was compromised and then the plug/bolts/flanges structure was ripped out of the body.

Re: United finds loose bolts on plug doors during 737 Max 9 inspections

#16
It is not so clear if the loose bolts are on the door or if they're the bolts that attach the door to the frame. Also given that the door that fell was just found in one piece this makes me suspect the latter

But regardless, not looking good for Boeing

(*door but of course it's more a plug than a real door, just using the term for ease of understanding)

Edit: https://twitter.com/ByERussell/status/1744460136855294106?t=...

Re: United finds loose bolts on plug doors during 737 Max 9 inspections

#18

At what point do consumers en-masse refuse to fly on these aircraft, if ever? When there's a few more fatal crashes?

Unfortunately consumers don't have much choice, the airline can change which type operates a flight at any time.

However longer term if Boeing's reputation keeps getting worse that can motivate buying decisions by the airlines. That change will be a very slow one, because fleet changes cost a lot of money in training crews, changing maintenance etc.

For example KLM is changing their short-haul fleet from the 737 NG to the A320neo family, that will take many years to completely roll out.

Re: United finds loose bolts on plug doors during 737 Max 9 inspections

#19

[flagged]

Those claims that it was maintenance is a bit bizarre considering these were brand new craft, and that panel isn't exactly a wear item. (ofc, some wear with each pressurization cycle, but I digress)

It'd be different if it was an engine issue on a 20+ year old plane.

But still, this isn't anything like the prior MAX issue - and frankly could have just as easily happened to any manufacturer like Airbus.

I don't think it's worth bashing Boeing much about, I doubt they're too happy about it either.

Re: United finds loose bolts on plug doors during 737 Max 9 inspections

#20

On at least 5 airplanes? Of one airline? Are loose bolts a minor issue, or is it as insane as it reads?

No, it's as insane as it reads.

It means people were careless and sloppy during assembly.

Think of it like seeing "one cockroach in your kitchen." It's not one cockroach. You just haven't opened up the rest of the walls.

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