ecbomberman
Topic Author
Posts: 83
Joined: Mon Mar 28, 2011 1:26 pm

Airbus Door Question

Sat Feb 16, 2013 5:27 am

Copied a discussion thread from the Civil Aviation forum with guys who seem to prefer to discuss the quality of journalism rather than the actual incident.

Emirates A380 Slow Cabin Decompression (by ek433 Feb 15 2013 in Civil Aviation)

AND the Daily Mail link:

http://www.dailymail.co.uk/news/arti...gged-gap-blankets-says-Briton.html

Just by looking at the picture....

What does the green indicator really mean? Does it mean the locking mechanism is off? I understand that the door would not open in mid-air due to pressure diff. but will it open when someone pushes the door?

Apparently there is a gap at the bottom of the door. Does that mean that the door has 'partially failed'? I.e.: The lower bit of the door has actually left the frame?

Many thanks for any input  
VS343/346/744 CX744/L1101/343 MH332/333/733 BD32x/EMB 145 AK320 SQ310/77E/773/744 UA747SP/744 BA744 BI763ER/319 QF763ER
 
Pihero
Posts: 4196
Joined: Mon Jan 31, 2005 5:11 am

RE: Airbus Door Question

Sat Feb 16, 2013 1:16 pm

Quoting ecbomberman (Thread starter):
What does the green indicator really mean?

It's an attention getter for the cabin crew : mainly for crew intercommunications and for emergency. Green means everything is OK... The name is AIP for "attendent information panel".
Quoting ecbomberman (Thread starter):
Does it mean the locking mechanism is off?

See above.

Quoting ecbomberman (Thread starter):
I understand that the door would not open in mid-air due to pressure diff. but will it open when someone pushes the door?

Let's put things in perspective : differential pressure will push the door to its cushions, even if the locking mechanism is off.
Considering that the door dimensions are some 84 by 50 inches and considering that the differential pressure is around 8 psi, 84 x 50 x 8 = 33,600 lbs ; That's the force applied on the door... some 15 tons... if you push, you add your weight to that force...

Quoting ecbomberman (Thread starter):
Apparently there is a gap at the bottom of the door

There is always a gap at the bottom of the door to allow it to get into the fuselage before it is forced to "unfold" into its seat. That gap is, for cosmetic reasons, covered by souple plastic.
There are ruber-compound seals, though, and one is probably leaking, making a sort of shuddering whistling noise, which can be rather loud. The cushions and blankets have been used by the cabin crew to partly mask that noise.

Much ado about nothing, or as we say in French :" beaucoup de bruit pour rien."

[Edited 2013-02-16 05:22:10]

[Edited 2013-02-16 05:27:14]
Contrail designer
 
Tristarsteve
Posts: 3363
Joined: Tue Nov 22, 2005 11:04 pm

RE: Airbus Door Question

Sat Feb 16, 2013 5:47 pm

Quoting ecbomberman (Thread starter):
Apparently there is a gap at the bottom of the door. Does that mean that the door has 'partially failed'? I.e.: The lower bit of the door has actually left the frame?

When you close an Airbus door, the final movement is that the whole door lowers about 2 cm, and the seal at the bottom of the dor pushes against the door sill. Sometimes there is rubbish left here, maybe a swizzle stick or a stone from a passengers shoe. Then there can be a deformation of the seal, and some air can leak out of the cabin. As the hole is usually very small, the air will whistle as it leaves, and it can get very noisy. Pushing blankets up against the door can help. It is quite a common occurence.
 
soon7x7
Posts: 2267
Joined: Thu May 04, 2006 10:51 am

RE: Airbus Door Question

Sun Feb 17, 2013 1:20 pm

WN takes paper towels and wets them into a globular matrix and rams it in the offending noisy area...fixed!...now can have my reduced size bag of peanuts?
 
VC-10
Posts: 3546
Joined: Tue Oct 26, 1999 11:34 am

RE: Airbus Door Question

Tue Mar 05, 2013 12:11 am

Quoting soon7x7 (Reply 3):
WN takes paper towels and wets them into a globular matrix and rams it in the offending noisy area...fixed!...

or Tampons!

http://www.vc10.net/Memories/testing_earlydays.html#VIPTampax
 
User avatar
Starlionblue
Posts: 17092
Joined: Fri Feb 27, 2004 9:54 pm

RE: Airbus Door Question

Tue Mar 05, 2013 2:15 am

While I can understand her reaction, the F/A reacted in EXACTLY the wrong way. Ouch... And shouldn't flight attendants know about plug doors?

Quoting Pihero (Reply 1):
Much ado about nothing, or as we say in French :" beaucoup de bruit pour rien."

Apparently quite a bit of "bruit" then.  
Quoting ecbomberman (Thread starter):
Copied a discussion thread from the Civil Aviation forum with guys who seem to prefer to discuss the quality of journalism rather than the actual incident.

You have to admit the journalism is classic Daily Mail though.  Some of the comments are priceless as well.

[Edited 2013-03-04 18:19:30]
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
ecbomberman
Topic Author
Posts: 83
Joined: Mon Mar 28, 2011 1:26 pm

RE: Airbus Door Question

Tue Mar 05, 2013 2:26 am

Quoting Starlionblue (Reply 5):
You have to admit the journalism is classic Daily Mail though. Some of the comments are priceless as well.

I enjoy it as well from time to time... Hence I usually read more 'up class' non-tabloid newspaper whenever possible  
VS343/346/744 CX744/L1101/343 MH332/333/733 BD32x/EMB 145 AK320 SQ310/77E/773/744 UA747SP/744 BA744 BI763ER/319 QF763ER
 
strfyr51
Posts: 2108
Joined: Tue Apr 10, 2012 5:04 pm

RE: Airbus Door Question

Tue Mar 05, 2013 4:06 am

I can assure you. The Door didn't come open. The Lower door seal blew out and that can happen if moisture freezes on the door sill or there's foreign object damage to the lower door seal. Had that door come open the seats ar the right of that picture would have departed the airplane and NO amount of tape would have covered it up. Trust me on this.
The passengers were in no danger. The repair once parts were available would be 6-12 hours

Who is online

Users browsing this forum: WIederling and 13 guests