Cable Forum

Cable Forum (https://www.cableforum.uk/board/index.php)
-   Current Affairs (https://www.cableforum.uk/board/forumdisplay.php?f=20)
-   -   Boeing 737 Planes Grounded (https://www.cableforum.uk/board/showthread.php?t=33712405)

Paul 06-01-2024 19:28

Boeing 737 Planes Grounded
 
The US FAA has grounded 171 Boeing planes after a piece fell off one in mid flight.

Quote:

The US airline regulator has ordered the temporary grounding of some Boeing 737 Max 9 jets after an outer section of one of the planes fell off during an Alaska Airlines flight.
https://www.bbc.co.uk/news/world-us-canada-67903655

idi banashapan 06-01-2024 22:33

Re: Boeing 737 Planes Grounded
 
Last time any of those people on board will get on a plane, I'm sure. Especially the guy who had his shift ripped off him... F that!

nffc 06-01-2024 22:39

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by idi banashapan (Post 36167853)
Last time any of those people on board will get on a plane, I'm sure. Especially the guy who had his shift ripped off him... F that!

It's the kind of thing which happens so rarely it's big news when it does.


Statistically air travel is very safe, getting in a car and going to the supermarket is probably more likely to get involved in an accident. Of course, when a plane crashes, it's more likely to seriously injure or kill a lot more people but then that's the case if a bus crashes as opposed to a car too.


This looks to be some sort of manufacturing defect - it is noticeable that the shape ripped off is a door shape, and that Alaska got their 737s without an optional door in that place. It's possible the process of converting that was defective and maybe it wouldn't be something that might be picked up in maintenance. When you're travelling a long way up and at speed the pressurisation is much different so anything which could be weaker may well pop over time.

Paul 07-01-2024 00:53

Re: Boeing 737 Planes Grounded
 
Commercial flights are by far the safest per mile travelled (Motorbikes are the least safe).
Private flights however have a poor record, they are the second worst, so if your going to fly, do it on a commercial flight.

Hom3r 07-01-2024 11:52

Re: Boeing 737 Planes Grounded
 
The door that failed was blocked as its not used on the seat configuration used.


The plane was only 2 months old.


As has been said, you have more chance dying on the way to the airport than flying to your destination.

Chris 07-01-2024 14:19

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Hom3r (Post 36167867)
The door that failed was blocked as its not used on the seat configuration used.


The plane was only 2 months old.


As has been said, you have more chance dying on the way to the airport than flying to your destination.

Unless you’re flying in a Boeing 737 max, which has a greater than average chance of crashing itself or jettisoning bits of its fuselage at random.

heero_yuy 07-01-2024 15:50

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by nffc (Post 36167855)

This looks to be some sort of manufacturing defect - it is noticeable that the shape ripped off is a door shape, and that Alaska got their 737s without an optional door in that place. It's possible the process of converting that was defective and maybe it wouldn't be something that might be picked up in maintenance.

I'd go along with that analysis. The original configuration with a door would have been thoroughly modeled and tested, may be the conversion wasn't.

Paul 07-01-2024 16:04

Re: Boeing 737 Planes Grounded
 
The door that blew out is apparenly held on by 4 bolts, that really doesnt sound like many.

Quote:

An unused emergency exit door blew out, leaving a gaping hole in the side of the fuselage.
Quote:

The door in question is meant to be securely bolted to the fuselage using four bolts.
The aircraft was only two months old, meaning simple wear and tear is unlikely to have been a factor.
https://www.bbc.co.uk/news/business-67906367

idi banashapan 07-01-2024 16:10

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by nffc (Post 36167855)
This looks to be some sort of manufacturing defect - it is noticeable that the shape ripped off is a door shape, and that Alaska got their 737s without an optional door in that place. It's possible the process of converting that was defective and maybe it wouldn't be something that might be picked up in maintenance. When you're travelling a long way up and at speed the pressurisation is much different so anything which could be weaker may well pop over time.

Well…. Yeah.

Pierre 07-01-2024 18:13

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36167876)
The door that blew out is apparenly held on by 4 bolts, that really doesnt sound like many.

https://www.bbc.co.uk/news/business-67906367

As mentioned in another thread, I’m an “Aircrash investigation” obsessive.

It may interest you to know that the tail of the Airbus A300, the Airbus equivalent to the 737, is only held on by three bolts.

And in 2001 a pilot over stressed the tail ( or vertical stabiliser) by wiggling the plane to avoid wake turbulence from the plane in front, and it sheared off.

The plane crashed killing all 260 on board.

https://en.wikipedia.org/wiki/Americ...nes_Flight_587

https://www.researchgate.net/figure/...fig1_279693318

Paul 07-01-2024 20:07

Re: Boeing 737 Planes Grounded
 
Wow ..... my front door is held in place by more bolts.

Chris 07-01-2024 21:04

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36167882)
Wow ..... my front door is held in place by more bolts.

I bet your door wouldn’t withstand 900 kilonewtons before flying off :D

(The tail fin of that Airbus withstood more than doubled its design tolerance before failing - the ‘wiggling’ Pierre described was actually a series of extremely violent and excessive control inputs by the plane’s first officer, who had been poorly trained on how to escape the emergency situation they were in).

In the present case, Boeing has allowed yet another flawed 737 Max 9 out of the factory. The type is turning out to be a disaster. Netflix’s damning documentary on the company (Downfall: The case against Boeing) is well worth watching. It focuses on the software issue that caused the autopilot to crash more than one of them and concludes that the corporate culture at Boeing has gone rotten, killing off the safety culture the company used to be famous for.

The blanking plate installed in this aircraft where there would otherwise have been an optional emergency door is either badly designed, or else its installation at the factory was botched and then quality control failed to pick it up. Either possibility is unnerving.

Paul 07-01-2024 22:30

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Chris (Post 36167883)
I bet your door wouldn’t withstand 900 kilonewtons before flying off :D

I not about to test that theory, it did withstand storms Gerrit and Henk. :)

Pierre 07-01-2024 23:50

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Chris (Post 36167883)
Netflix’s damning documentary on the company (Downfall: The case against Boeing) is well worth watching.

Definitely, I’ve watched it and a couple of others too.

It wasn’t so much the software issue, which was an attitude correcting program. The plane flew fine, if you knew how to fly it. As always it was about the money.

History…..Because the 737 airframe is essentially the same one for 55 years, but engines have changed, and for modern engines to fit the 55 year old frame they have to be slung way forward, therefore making the plane slightly unstable.

Boeing fixed this with software, as Chris says, but they filed the change as BAU, therefore not requiring retraining of pilots, because that is very expensive. So pilots did not not know that this software would make corrections to the plane’s attitude independently of the pilots inputs.

So, when you took off, you had the plane pulling up, so the pilot pushed down, and vice versa, which led to two crashes.

It was simply cost cutting over safety. Unforgivable, especially in aviation.

Chris 08-01-2024 10:31

Re: Boeing 737 Planes Grounded
 
This morning’s developments:

- this specific aircraft had pinged pressurisation warnings in the cockpit on multiple occasions and Alaska Airlines had restricted it from long-haul flights over water in case it needed to land quickly.
- a teacher called Bob found the missing piece of fuselage in his back garden in Portland.
- an iPhone sucked out of the cabin during the emergency has been found, in working order.

https://www.bbc.co.uk/news/world-us-canada-67909417

Pierre 08-01-2024 11:05

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Chris (Post 36167894)
- this specific aircraft had pinged pressurisation warnings in the cockpit on multiple occasions and Alaska Airlines had restricted it from long-haul flights over water in case it needed to land quickly.

If I was an AA customer, I wouldn't be very happy with that mitigation!

mrmistoffelees 08-01-2024 13:02

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36167862)
Commercial flights are by far the safest per mile travelled (Motorbikes are the least safe).
Private flights however have a poor record, they are the second worst, so if your going to fly, do it on a commercial flight.

Because drivers STILL don’t look for motorcyclists….

AKA SMIDSY

spiderplant 08-01-2024 17:30

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by mrmistoffelees (Post 36167898)
Because drivers STILL don’t look for motorcyclists….

But they don't look out for planes either

https://www.youtube.com/watch?v=K6-GV_gGYtM

mrmistoffelees 08-01-2024 22:36

Re: Boeing 737 Planes Grounded
 
United Airlines finds loose bolts….

https://news.sky.com/story/united-ai...tions-13044409

Paul 09-01-2024 05:16

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by mrmistoffelees (Post 36167949)
United Airlines finds loose bolts….

https://news.sky.com/story/united-ai...tions-13044409

Loose bolts on new planes, really bad.

Also,
Quote:

Six crew members were seriously injured.
Thats the first Ive seen about any injuries on the plane.

Dude111 09-01-2024 06:54

Quote:

Originally Posted by idi banashapan
Last time any of those people on board will get on a plane, I'm sure. Especially the guy who had his shift ripped off him... F that!

Yes its good everyone is ok!!

spiderplant 09-01-2024 11:37

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36167954)
Thats the first Ive seen about any injuries on the plane.

I suspect that's lost in translation from "None of the 171 passengers and six crew members was seriously injured.". A 178 seat plane would have 4 cabin crew members plus 2 pilots.

But it was extraordinarily lucky to have an empty seat by the panel that blew if 171 out of 178 seats were occupied.

Hugh 09-01-2024 12:50

Re: Boeing 737 Planes Grounded
 
https://www.opb.org/article/2024/01/...s-over-oregon/

Quote:

Several passengers injured on Alaska Airlines flight that blew out midair over Oregon, company says
This matches with the Airline’s website

https://news.alaskaair.com/alaska-ai...tions/as-1282/

Quote:

Several guests onboard experienced injuries that required medical attention. All guests have now been medically cleared.
This is why (after reading about a similar occurrence a number of years ago, Aloha Airlines Flight 243) I always have my seatbelt on when sitting in my plane seat…

mrmistoffelees 09-01-2024 12:58

Re: Boeing 737 Planes Grounded
 
However some good scientific research

Apple has become the first smartphone manufacturer to pass the three-mile drop test.

https://www.theregister.com/2024/01/...ne_16000_drop/

ianch99 10-01-2024 13:29

Re: Boeing 737 Planes Grounded
 
Interesting question: when booking a flight, if the plane is a 737 Max, would you still go on that flight?

Paul 10-01-2024 14:43

Re: Boeing 737 Planes Grounded
 
I dont think you can atm, arent they still grounded ?

(The affected models, which seems to be a subset).

ianch99 10-01-2024 17:09

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36168053)
I dont think you can atm, arent they still grounded ?

(The affected models, which seems to be a subset).

When they are cleared to fly again, which will happen, would you fly on one?

Julian 10-01-2024 19:11

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by ianch99 (Post 36168058)
When they are cleared to fly again, which will happen, would you fly on one?

Yet another reason not to fly ryanair - as if you needed one.

Paul 10-01-2024 19:25

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by ianch99 (Post 36168058)
When they are cleared to fly again, which will happen, would you fly on one?

Its not like you get given a choice, but yes, since they have all been closely inspected, why not.

[ I dont think any in the UK are the affected model anyway ? ]

Pierre 10-01-2024 21:07

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36168067)

[ I dont think any in the UK are the affected model anyway ? ]

Ryan Air have a fleet of 737-MAX

spiderplant 10-01-2024 22:39

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Pierre (Post 36168075)
Ryan Air have a fleet of 737-MAX

But in the high density configuration that has a real emergency exit, not a plug.

Chris 11-01-2024 00:06

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Pierre (Post 36168075)
Ryan Air have a fleet of 737-MAX

I believe they may all be Max-8. The affected aircraft is Max-9.

pip08456 11-01-2024 21:58

Re: Boeing 737 Planes Grounded
 
1 Attachment(s)
Seems Fair.

https://www.cableforum.uk/board/atta...0&d=1705006480

Paul 12-01-2024 00:16

Re: Boeing 737 Planes Grounded
 
Seems the FAA are far from impressed.

Chris 12-01-2024 00:39

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Paul (Post 36168110)
Seems the FAA are far from impressed.

“Additional discrepancies” sounds ominous … :erm:

pip08456 12-01-2024 22:25

Re: Boeing 737 Planes Grounded
 
1 Attachment(s)
Probibly explains it.

https://www.cableforum.uk/board/atta...1&d=1705094696

Sephiroth 15-01-2024 12:11

Re: Boeing 737 Planes Grounded
 
You pipped Hugh to the post!

Hugh 15-01-2024 16:03

Re: Boeing 737 Planes Grounded
 
1 Attachment(s)
Quote:

Originally Posted by Sephiroth (Post 36168278)
You pipped Hugh to the post!

Well, you know what they say…

https://www.cableforum.uk/board/atta...9&d=1705331013

Ms NTL 15-01-2024 20:03

Re: Boeing 737 Planes Grounded
 
1 Attachment(s)
Problem fixed

https://www.cableforum.uk/board/atta...chmentid=30851

Chris 06-02-2024 21:08

Re: Boeing 737 Planes Grounded
 
Four bolts were missing from the panel that blew out of the Alaska Airlines B737, The US NTSB finds.

https://www.bbc.co.uk/news/business-68220627

A shocking failure of manufacturing process, quality control, and regulatory oversight. Many heads should roll.

Paul 06-02-2024 23:08

Re: Boeing 737 Planes Grounded
 
Seems they were removed after initial manufacture & fitting.

Quote:

The door plug was manufactured by Boeing's supplier Spirit AeroSystems, and originally installed in the fuselage before being delivered to the aerospace giant.

According to the preliminary report, this door plug was later removed in the factory due to damage that had occurred during the production process.

Photographic evidence suggests that when the plug was reinstalled, at least three of the four locking bolts were not put back in place.

Dude111 07-02-2024 06:21

Thats insane.... They must not have tightenend them all the way!!

Hugh 07-02-2024 09:48

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by Dude111 (Post 36169544)
Thats insane.... They must not have tightenend them all the way!!

From the post above yours

Quote:

Photographic evidence suggests that when the plug was reinstalled, at least three of the four locking bolts were not put back in place.
Pretty challenging to tighten something that isn’t there…

Halcyon 07-02-2024 10:30

Re: Boeing 737 Planes Grounded
 
Doesn't help when the new way of working is that great engineers of the past have been replaced with bean counters who cut corners and go for cheapest manufacturing possible.

Hom3r 07-02-2024 11:12

Re: Boeing 737 Planes Grounded
 
my last job was in aviation, all repairs were check by an inspector, flaps and over moving parts were checked by 2

ianch99 07-02-2024 16:14

Re: Boeing 737 Planes Grounded
 
Quote:

Originally Posted by ianch99 (Post 36168049)
Interesting question: when booking a flight, if the plane is a 737 Max, would you still go on that flight?

Seems it a No from a few ex-Boing employees:

https://www.businessinsider.com/form...737-max-2024-1

Quote:

Two former Boeing staffers told the Los Angeles Times they wouldn't fly on a 737 Max jet due to safety concerns.

"I would absolutely not fly a Max airplane," Ed Pierson, a former senior manager at Boeing, told the LA Times.

"I've worked in the factory where they were built, and I saw the pressure employees were under to rush the planes out the door," he added.


All times are GMT +1. The time now is 21:59.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
All Posts and Content are © Cable Forum