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Alaska Airlines 737 Max makes emergency landing due to depressurization

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Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#161
post #147

What strikes me with the ATC recording is that I can barely hear what they say (and that's the case with almost every ATC recording I heard before). And that's without being in a noisy environment (plane in flight). Is the quality really that bad? Doesn't that cause miscommunications? It seems like a fairly fixable problem in 2024.

Depending on where you are getting your recordings, what you are hearing isn't necessarily the quality that the pilot and ATC hear.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#162

Earlier quoted context omitted.

Frothing at the mouth is exactly what is called for here. A plane that loses a big chunk is indeed “fucked”, the only reason someone didn’t die is that that particular seat wasn’t occupied. There should have been many many redundant safety systems and procedures here with either didn’t exist or failed. People should be out for blood because there are obviously serious problems at both Boeing and the FAA. This was not…

I'm not standing by comments that go against the safety culture of aviation No, nobody should be "frothing at the mouth", that's an ignorant and unhelpful behaviour. Air travel didn't get safer by doing that > A plane that loses a big chunk is indeed “fucked” It landed fine and it is in principle repairable. No, it is not fucked > There should have been many many redundant safety systems and procedures here with eith…

Aerospace was my field before tech was. Reliability is still my field.

A door got sucked out of a plane in flight. That is not a matter of unavoidable human error but can only be the consequence of a concert of cascading failures of the type that should never happen which is why it’s a 10/10, if the flight had been full at least one passenger would have likely been sucked out. It is dumb luck that this did not happen.

Your attitude of derating a disaster like this is a strong indicator of the type of problem in the industry. In the end if we don’t get executives resigning and major operating overhauls with the responsible entities, it will be a terrible miscarriage of justice.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#163

Earlier quoted context omitted.

Frothing at the mouth is exactly what is called for here. A plane that loses a big chunk is indeed “fucked”, the only reason someone didn’t die is that that particular seat wasn’t occupied. There should have been many many redundant safety systems and procedures here with either didn’t exist or failed. People should be out for blood because there are obviously serious problems at both Boeing and the FAA. This was not…

How do you know it's related to Boeing's actions in any way? Why do you think there weren't any safety procedures, and again, how do you know it's Boeing's fault they weren't followed? Do you think it's only Boeing itself doing aircraft service? It's not.

> How do you know it's related to Boeing's actions in any way?

With all of their actions in recent memory, they currently have negative benefit of the doubt; problems and issues should be assumed, and if/when they occur, public blame and shame will generally start on them until proven otherwise.

That's the consequence of throwing caution to the wind and repeatedly trashing their own reputation for a few more short-term dollars.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#164

Earlier quoted context omitted.

Frothing at the mouth is exactly what is called for here. A plane that loses a big chunk is indeed “fucked”, the only reason someone didn’t die is that that particular seat wasn’t occupied. There should have been many many redundant safety systems and procedures here with either didn’t exist or failed. People should be out for blood because there are obviously serious problems at both Boeing and the FAA. This was not…

How do you know it's related to Boeing's actions in any way? Why do you think there weren't any safety procedures, and again, how do you know it's Boeing's fault they weren't followed? Do you think it's only Boeing itself doing aircraft service? It's not.

It is Boeing’s aircraft. Absent a sophisticated act of intentional sabotage, Boeing is at least partially responsible. The physical design, manufacturing, assembly, qualification, maintenance plans, and maintenance training are all responsibilities of the prime contractor. If a damn door falls off in flight more than one of those definitely contributed. It isn’t only Boeing. The FAA is also reasonable for verifying and requiring Boeing do all the right things and they will share blame as well as likely one or more of the several groups that will have contributed to the failure.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#165

Is the FAA going to drag their feet again grounding this plane until the problem is root caused?

I’d be willing to bet all planes built in the last year or so will be grounded immediately. As for others, possibly if they determine the issue is long standing and we’ve just been lucky.

I accept your bet.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#166
post #142

Earlier quoted context omitted.

I’m suspicious of this comment. Especially since this article was directly above this one on HN for awhile today: https://www.seattletimes.com/business/boeing-aerospace/boein...

I'm an aerospace engineer, this is my field. It makes no sense to call for heads to roll without even knowing the root cause. If this happens again on a different airframe, I'll change my tune in a hurry.

Modern Boeing has a consistent record for a reckless disregard for critical aspects of safety in favor of profits. So assuming that this is another case of that and calling for heads to roll at first sight is a fair reaction. That is the result of the reputation their executives have willingly built and the choices they have made.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#167

Earlier quoted context omitted.

I’d be willing to bet all planes built in the last year or so will be grounded immediately. As for others, possibly if they determine the issue is long standing and we’ve just been lucky.

Alaska just grounded all their MAX-9s. http://web.archive.org/web/20240106075153/https://news.alask...

Because it makes sense to double check your maintenance when you just experienced an issue overwhelmingly likely to be related to maintenance.

These same exact exit plugs have been in service without issue since at least 2007.

> Each aircraft will be returned to service only after completion of full maintenance and safety inspections. We anticipate all inspections will be completed in the next few days.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#168
post #87

Earlier quoted context omitted.

The pictures clearly show that the seat is still there. It also wasn't a window... that's a plug for an unused emergency exit location. Planes have spots in the fuselage where emergency exits can be placed if the aircraft is configured with enough seats where it needs more exits. This one wasn't, so instead of an emergency exit, there's a plug bolted into the spot instead. Would have to guess that there was a defect…

It's not a plug door. It's an outward-opening door, apparently. [1] Usually, those things are plugs, and have to be pulled inward to open them, which is not possible when the cabin is pressurized. But there are B-737 configurations where it's an outward-opening door. For those, when there's a door installed, there's a single solenoid to prevent opening it in flight.[2] Is there some kind of dummy door that's installe…

This was the (regular) rear door that Alaska effectively papers over.

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#169

> The Boeing 737-9 MAX rolled off the assembly line just two months ago, receiving its certification in November 2023, according to FAA record posted online. It’s 2 months old, so poor maintenance, wear and tear, etc are not even minor factors. This is just a poorly made plane with awful quality control. And that’s even before we get into some of the design issues, both the shortcuts they’ve taken and ones that are m…

Was it made at the plant in North Carolina? Or in Seattle?

The part that blew off was a blank filler panel for an optional emergency door. With that context, are they still delivered as part of the fuselage or are they added in the final assembly?

Re: Alaska Airlines 737 Max makes emergency landing due to depressurization

#170

Earlier quoted context omitted.

[flagged]

> We need to reel in capitalism Ah yes, the aerospace and airline industries are just really overrun with free market ideals.

I hope it's not controversial to point out that agents motivated by profit will, at the limit, optimize for profit at the expense of everything else (including, in this case, safety). Airlines are less regulated today than they were back when Boeing got its start; the other quality of free and markets is that they consolidate into monopolies, at which point the market stops functioning entirely as a useful mechanism for resource allocation.
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