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MD-11 Open Hatch At Take Off Question  
User currently offlineTripple7 From Netherlands, joined Aug 1999, 539 posts, RR: 0
Posted (8 years 10 months 2 days 13 hours ago) and read 4655 times:

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?

12 replies: All unread, jump to last
 
User currently offlineDtwclipper From , joined Dec 1969, posts, RR:
Reply 1, posted (8 years 10 months 2 days 13 hours ago) and read 4640 times:

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.


User currently offlineCBPhoto From United States of America, joined Dec 2003, 1551 posts, RR: 5
Reply 2, posted (8 years 10 months 2 days 13 hours ago) and read 4627 times:

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
User currently offlineHS748 From , joined Dec 1969, posts, RR:
Reply 3, posted (8 years 10 months 2 days 13 hours ago) and read 4558 times:

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.

User currently offlineAirfoilsguy From , joined Dec 1969, posts, RR:
Reply 4, posted (8 years 10 months 2 days 8 hours ago) and read 4290 times:

I would not worry about that hatch.



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Photo © JetPix



This hatch on the other hand may cause a problem  Smile


User currently offlineCadet57 From United States of America, joined Jul 2005, 9085 posts, RR: 30
Reply 5, posted (8 years 10 months 2 days 8 hours ago) and read 4276 times:

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?



Doors open, right hand side, next stop is Springfield.
User currently offlineAirfoilsguy From , joined Dec 1969, posts, RR:
Reply 6, posted (8 years 10 months 2 days 7 hours ago) and read 4193 times:

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


User currently offlineWestWing From United States of America, joined Feb 2005, 2134 posts, RR: 7
Reply 7, posted (8 years 10 months 2 days 7 hours ago) and read 4107 times:

Look at What's This Little Door On The DC-10? (by Starlionblue May 2 2005 in Tech Ops) .


The best time to plant a tree is 40 years ago. The second best time is today.
User currently offlineLongbowPilot From United States of America, joined Jan 2005, 577 posts, RR: 4
Reply 8, posted (8 years 10 months 2 days 4 hours ago) and read 3979 times:
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Lets not forget all the luggage you can find on tops of buildings throughout ORD, ATL, DFW, JFK due to open luggage bins.

User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 9, posted (8 years 10 months 2 days ago) and read 3819 times:

Main Outflow Valve.

Quoting Airfoilsguy (Reply 4):

How did the Door get Pressurised Hydraulically to Open.Any link.
regds
MEL



Think of the brighter side!
User currently offlineSfilipowicz From Netherlands, joined Jul 2002, 327 posts, RR: 1
Reply 10, posted (8 years 10 months 1 day 19 hours ago) and read 3667 times:

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.

User currently offlineAirfoilsguy From , joined Dec 1969, posts, RR:
Reply 11, posted (8 years 10 months 1 day 10 hours ago) and read 3405 times:

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!


User currently offlineAirfoilsguy From , joined Dec 1969, posts, RR:
Reply 12, posted (8 years 10 months 1 day 10 hours ago) and read 3404 times:

Quoting HAWK21M (Reply 9):
Any link

http://aviation-safety.net/database/record.php?id=19890714-0


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