futureualpilot
Posts: 2404
Joined: Thu May 25, 2000 10:52 am

Gear Door Retraction

Fri Aug 22, 2003 11:00 am

I traveled with Delta recently, and we were flying a 767-432ER (N842MH) from ATL-FLL. I noticed however, that when the 764 pulled into the gate, the nose gear doors had not retracted completeley....meaning they were not flush with the fuselage, but potruding a bit. (Lol, and for you joksters, it wasnt the ones that are open where the gear sticks out, but the 2nd pair of doors, that open and close when the gear must be extended or retracted.) Does anybody know why this could be?
p.s.- I apologize for not having a picture of it
Life is better when you surf.
 
AJ
Posts: 2295
Joined: Wed Nov 03, 1999 3:54 pm

RE: Gear Door Retraction

Fri Aug 22, 2003 11:11 am

Standard for the 767, the nose gear doors protrude a couple of inches with the gear down.
 
DC10GUY
Posts: 2590
Joined: Fri Feb 18, 2000 5:52 am

RE: Gear Door Retraction

Fri Aug 22, 2003 11:29 am

On all Boeings the nose gear doors close different when the gear is down, then when the gear is up. In flight the doors will be flush....(if everything is rigged right)....
Next time try the old "dirty Sanchez" She'll love it !!!
 
futureualpilot
Posts: 2404
Joined: Thu May 25, 2000 10:52 am

RE: Gear Door Retraction

Fri Aug 22, 2003 11:35 am

Hmm...I didnt know that....thank you for your answers though...thats an interesting piece of trivia...ands it will put me at ease too knowing its normal :p
Life is better when you surf.
 
DC10GUY
Posts: 2590
Joined: Fri Feb 18, 2000 5:52 am

RE: Gear Door Retraction

Fri Aug 22, 2003 12:09 pm

I shouldn't have said "all Boeings" the 747 has an hydraulic nose gear door actuator so it closes the same way with the gear up or down. Some doors will droop when hydraulic pressure is off.
Next time try the old "dirty Sanchez" She'll love it !!!
 
242
Posts: 495
Joined: Tue Oct 24, 2000 1:10 pm

RE: Gear Door Retraction

Fri Aug 22, 2003 12:17 pm

It seems most all airliners with mechanical linkage nose gear doors exhibit this trait. Two non-boeing planes that also do this are the ATR-72 and DC-9/MD-80 family. I've even seen some aircraft with placards installed on or near the nose doors to notify well-meaning, but uninformed pilots and mechs that nothing is amiss.
 
AJ
Posts: 2295
Joined: Wed Nov 03, 1999 3:54 pm

RE: Gear Door Retraction

Fri Aug 22, 2003 12:25 pm

Here's some proof for you:

View Large View Medium
Click here for bigger photo!

Photo © Andy Vanderheyden
View Large View Medium
Click here for bigger photo!

Photo © Mariusz Siecinski

 
cancidas
Posts: 3985
Joined: Thu Jul 03, 2003 7:34 am

RE: Gear Door Retraction

Fri Aug 22, 2003 12:29 pm

does the nose gear help to keep the doors flush when retracted?
"...cannot the kingdom of salvation take me home."
 
futureualpilot
Posts: 2404
Joined: Thu May 25, 2000 10:52 am

RE: Gear Door Retraction

Fri Aug 22, 2003 12:33 pm

Thanks Aj, thats exactly what I mean!
Life is better when you surf.
 
AJ
Posts: 2295
Joined: Wed Nov 03, 1999 3:54 pm

RE: Gear Door Retraction

Fri Aug 22, 2003 3:49 pm

Futureualpilot, from what I can establish the brace strut that runs down to the nose gear does not allow the doors to close fully, although I have been unable to get a good explaination. I actually asked an engineer when I took this photo as the new paint made the gap stand out more!
http://www.jetphotos.net/viewphoto.php?id=93128
 
aloges
Posts: 14842
Joined: Tue Jan 17, 2006 3:38 am

RE: Gear Door Retraction

Sat Jan 31, 2004 6:29 am

Given there's a new thread on this topic, it should be okay to bring this thread back to the top.

http://www.airliners.net/discussions/tech_ops/read.main/78872/
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