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Boeing 777 loses tire while taking off from SF, crushing cars on the ground

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Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#81

i'm wondering what platform could presently take twitter's place for publishing news like this? twitter gets a lot of flak here for political reasons. but it seems it nonetheless serves a societal purpose.

Any Fediverse site works. Most are more publicly accessible than Twitter (no limited number of views, and you can actually see replies). The big advantage is that every organisation can run their own server and not be dependent on a single company.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#82

One thing I won't ever understand is why we allow large airports to be located in a way that puts any kind of infrastructure, be it residential, commercial, transportation or recreational, under the flight path for critical phases (i.e. start/land). Right where I used to work there's a memorial placard for a plane that crashed in 1960 due to an engine failure [1], and maybe five minutes worth of walking from where I…

People generally want to travel from areas with lots of people, to other areas with lots of people. So cities.

There has actually been a proposal to move Schiphol (Amsterdam Airport) to an artificial island in the North Sea, because Schiphol is producing a lot of noise pollution for the surrounding towns. (And not just that; my sister used to play hockey on fields under an approach, and sometimes the field would smell like kerosine.)

But such a move would dramatically increase travel time to and from the city. Although maybe you could save time by having a dedicated train line and do checkin before getting in the train, passport check while on the train, etc.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#84

Boeing shares seem unaffected by this event. Poor Boeing, this is what happens when you lose your “soul” as a company and you start chasing margins, profit, dividends and you don’t pay attention to you people and your product. Have seen it happening in many big companies, and I don’t understand why intelligent/educated/competent CEOs don’t see this :-(

[deleted]

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#85
post #61
post #7

I would think this is most likely a failure by the maintenance department and not Boeing themselves but wow do they not need to be in headlines again.

If it is a maintenance failure, it's a really big one. You would have to change the tire (really the whole wheel) before this flight, not put the wheel nut on, and not put the wheel nut lock on, and close the wheel nut cover without having done that, probably with a second person there, and have the wheel somehow stay on while taxiing. I think I see the brakes still on the axle in the video, so I suppose this is what…

Oh I agree. The idea of forgetting to secure a tire, even without knowing the aviation specific bits, is clearly a HUGE mistake.

But I just don’t see any other way this could happen unless the tire was secured and just that part of the axle broke off which seems incredible unlikely in general, let alone compared to human fallibility.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#86
post #64

Earlier quoted context omitted.

>You're hearing about this because aviation accidents _don't_ happen I can't tell if you are serious, but I count 7 commercial aviation accidents in the past week... https://avherald.com/

Think about doing an investigation and writeup for every dent and fender bender in the nation, in addition to the major accidents. That’s essentially what you’re looking at, but for aircraft. Across the world, and all the millions of people and ways in which all types of aircraft are used, big, small, old, young, immaculately maintained, beat to shit, etc.

This is a changing of the goalpost and regardless we’ve had doors fly off just in the last month.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#87

Boeing shares seem unaffected by this event. Poor Boeing, this is what happens when you lose your “soul” as a company and you start chasing margins, profit, dividends and you don’t pay attention to you people and your product. Have seen it happening in many big companies, and I don’t understand why intelligent/educated/competent CEOs don’t see this :-(

> Boeing shares seem unaffected by this event. Probably because it's considered too big to fail. It's pretty much backed by the US gov.

More likely because it's a maintenance issue at the airline, and not a structural issue at Boeing, especially given the 777's solid track record over decades service.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#88
I did a Boeing factory tour back in the day.

At the end of the tour they made everyone say “I ain’t going, if it’s not Boeing” as a way to celebrate their superior plane.

Ironically the mantra now is

“If it’s Boeing, it ain’t going”

Oh how times have changed.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#89
post #85
post #61

Earlier quoted context omitted.

If it is a maintenance failure, it's a really big one. You would have to change the tire (really the whole wheel) before this flight, not put the wheel nut on, and not put the wheel nut lock on, and close the wheel nut cover without having done that, probably with a second person there, and have the wheel somehow stay on while taxiing. I think I see the brakes still on the axle in the video, so I suppose this is what…

Oh I agree. The idea of forgetting to secure a tire, even without knowing the aviation specific bits, is clearly a HUGE mistake. But I just don’t see any other way this could happen unless the tire was secured and just that part of the axle broke off which seems incredible unlikely in general, let alone compared to human fallibility.

Axles have failed on landing gear, but the wheels on both sides would be affected. The images I have seen of examples are all due to hard landings.

Re: Boeing 777 loses tire while taking off from SF, crushing cars on the ground

#90
post #58

The video shows that the tire didn't come apart. It looks like the wheel came off with the tire attached. For just the tire to fall off whole, lots of bolts holding the two-piece rims together would have to not be bolted, and half the rim would come off, anyway, vs. one big nut holding the wheel to the hub. Still, hard to believe either way: The wheel nut should have something like 250nm of torque, and it has a locki…

Accrual of under-examined metal fatigue likely occurred. This points to serious deficiencies in inspection.
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