tripple7
Posts: 510
Joined: Sun Aug 22, 1999 8:53 pm

MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 5:06 am

Looking at this picture, it seems that a hatch (just in front of the engine) on the KLM MD-11 is still open.


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Photo © Steven Filipowicz



Where is this hatch used for. And can it do any harm when it is open when the aircraft takes off?
 
dtwclipper
Posts: 6668
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 5:08 am

This has been talked about before. I believe if you do a search on it, you will find a lot of answers.

Look under the DC-10 topics.
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cbphoto
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 5:09 am

This should be a Tech-Ops question, but I believe it has something to do with the Cabin Pressurization system. I think it the door that allows the bleed cabin pressure out. But I might be mistaken!
ETOPS: Engines Turning or Passengers Swimming
 
HS748
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 5:24 am

I think it's the pressurisation outflow valve. It closes as the aircraft pressurises during the climb and opens as it depressurises during descent. You can see it on most aircraft types.
 
airfoilsguy
Posts: 3485
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 10:06 am

I would not worry about that hatch.



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This hatch on the other hand may cause a problem  Smile
It's not a near miss it's a near hit!!
 
Cadet57
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 10:09 am

Quoting Airfoilsguy (Reply 4):
This hatch on the other hand may cause a problem

Ive seen that picture dozens of times. Whats the story behind that?
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airfoilsguy
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 10:47 am

Quoting Cadet57 (Reply 5):
Whats the story behind that?

Hatch opened up during takeoff from Miami. Plane turned around and landed safely. Not sure why the hatch opened though
It's not a near miss it's a near hit!!
 
WestWing
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 11:24 am

Look at What's This Little Door On The DC-10? (by Starlionblue May 2 2005 in Tech Ops) .
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LongbowPilot
Posts: 526
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RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 2:18 pm

Lets not forget all the luggage you can find on tops of buildings throughout ORD, ATL, DFW, JFK due to open luggage bins.
 
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HAWK21M
Posts: 30002
Joined: Fri Jan 05, 2001 10:05 pm

RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 5:45 pm

Main Outflow Valve.

Quoting Airfoilsguy (Reply 4):

How did the Door get Pressurised Hydraulically to Open.Any link.
regds
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sfilipowicz
Posts: 290
Joined: Wed Jul 17, 2002 3:59 pm

RE: MD-11 Open Hatch At Take Off Question

Tue Oct 25, 2005 10:56 pm

Once I remember an aircraft taking off from AMS with the doorsteps still attached to the aircraft!! It was long ago but I still remember seeing the pictures on tv.
 
airfoilsguy
Posts: 3485
Joined: Sun Oct 09, 2005 7:28 am

RE: MD-11 Open Hatch At Take Off Question

Wed Oct 26, 2005 7:54 am

Quoting LongbowPilot (Reply 8):
Lets not forget all the luggage you can find on tops of buildings throughout ORD, ATL, DFW, JFK due to open luggage bins.

Are you serious?  Wow!
It's not a near miss it's a near hit!!
 
airfoilsguy
Posts: 3485
Joined: Sun Oct 09, 2005 7:28 am

RE: MD-11 Open Hatch At Take Off Question

Wed Oct 26, 2005 7:57 am

It's not a near miss it's a near hit!!

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