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

theaircurrent.com

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

#81

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

I doubt ever, consumers have been proven to select the cheapest airline ticket. The average once-a-year flier likely has no idea what aircraft they are even flying on.

I wonder what fraction of seats/revenue come from people who take one or fewer trips per year.

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

#82

Makes you wonder if there was malice involved?

My grandfather worked for Braniff as a mechanic, and I've heard stories where very strange things would happen that definitely gave merit to some sort of sabotage being a likely explanation. From very specialized tools would be missing not from just one bay, but from all of the bays to other issues that would cause regular maintenance from being able to be completed in a timely turn causing more and more planes to be taken out of service. Lots of things went wrong with that airline, but some of the things just makes you scratch your chin in wonder if it might not be possible.

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

#83

It seems there's a sense of malaise falling over everything and everyone in the USA. People at large simply cannot be bothered to care about anything, including torque specs for freakin' AIRLINERS

Culture problem as we hire people of a generation who were not educated or engrained with responsibility they avoid doing the right thing and this happens.

The only cultural problem is in management.

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

#84

Earlier quoted context omitted.

I know of a pretty famous car tuner in the US (I won't get too specific for various reasons) and despite most people in my community going to him for service over the years, multiple people have come out and proved he rarely if ever torques anything to spec. For the longest time he even allowed customers to watch in the shop space as he worked on their cars and he'd hand-torque many things that the car manual was ver…

German torque specs: "gutentight!"

Nach fest kommt ab.

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

#85

It seems there's a sense of malaise falling over everything and everyone in the USA. People at large simply cannot be bothered to care about anything, including torque specs for freakin' AIRLINERS

>People at large simply cannot be bothered to care about anything People care deeply about a lot of things, just not this. And why should they? When you have every business decision made either by private equity or public companies with a focus only on the next 90 days it turns out everything goes to shit. Wages are stagnant. Wealth inequality is massive. Our society is sick. Issues like this will only increase. Our…

Random aside: I looked up an Acela ticket this morning.

$1000 for a first class ticket from DC to BOS. 6.5 hours.

Same flight first class with Delta this week is $850. Also 6 hours with layover.

Blows my mind first class rail travel is as much as first class air travel.

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

#86
post #45

Earlier quoted context omitted.

[flagged]

That is not what I said But when you have a quota, then you must ignore better qualified applicants in order to satisfy the quota. It's a mathematical fact. I am not saying this is the reason why Boeing is turning to shit. But it's an interesting observation. I myself am a "minority/POC" and I'm also extremely competent at my job. So I'm not saying that minorities are incompetent, because I am not incompetent. When I…

[flagged]

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

#87

There were only 2 possible causes of the incident, either the bolts had been replaced with bolts made from an inappropriate material, so they broke, or the bolts had not been assembled correctly, and they became loose. It appears that the latter is what happened. Perhaps those who did the assembly of the doors at Boeing did not use the right kind of washers that are needed to prevent the unscrewing of the bolts, or t…

Or the lock wire was left off or done incorrectly

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

#89
post #51

Earlier quoted context omitted.

I know of a pretty famous car tuner in the US (I won't get too specific for various reasons) and despite most people in my community going to him for service over the years, multiple people have come out and proved he rarely if ever torques anything to spec. For the longest time he even allowed customers to watch in the shop space as he worked on their cars and he'd hand-torque many things that the car manual was ver…

I've noticed the same with electrical work. How many use torque screwdrivers, even when dealing with high load appliances (eg, a 50 amp EVSE)?

I've worked in stage lighting and general construction at different parts of my career, and I never saw these being used by anyone despite them being very much required for a proper job.

WAGO clamp terminals are a godsend here - no need to take care about wire nuts going loose, screw terminals being too loose or too tight (leading to fracture), ferrules being properly crimped... just insert the cable, lower the lever, and off you go. Unfortunately, standard DIN fuses still come with only screw terminals.

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

#90

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.

They're not plug-style doors. They open outward. That's the problem.

Opening outward is mechanically riskier, but more likely to be useful in an emergency. The drill for plug-style over-wing exits: Remove cover from upper handle, grab upper and lower handle, yank upper handle, pull door inside, have 15Kg or more of door land on your lap, turn big clunky door sideways, pitch through hole so it's outside and out of the way, climb through hole. Training video.[1] Few passengers are likely to get that drill right in an emergency, and the flight attendants are in the wrong place to do it.

[1] https://www.youtube.com/watch?v=RCFzEg-t_Bk

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