SXDFC
Topic Author
Posts: 1661
Joined: Sun Dec 09, 2007 6:07 pm

737 Ground Power Question

Sun Aug 05, 2012 5:38 am

Hello All:

For quite some time at work I've noticed many of our newer 737s (circa 2010+), have the ground power port in a vertical position vs the older model 737s.. Can anyone explain why this is the case?


N949WN, 2010 model 737-7H4

http://i1208.photobucket.com/albums/cc368/737-8H4/9416e139.jpg

N927WN, 2008 model 737-7H4

http://i1208.photobucket.com/albums/cc368/737-8H4/c427f8a3.jpg
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
yeelep
Posts: 724
Joined: Mon Apr 04, 2011 7:53 pm

RE: 737 Ground Power Question

Sun Aug 05, 2012 10:30 am

In Boeing speak, it was done to improve "External Power Receptacle Retention and Connectivity". There have been problems with the pins breaking on the new vertical connector, so from line #3852 they went back to the previous horizontal one until changes can be made. Eventually the new vertical connector will be offerred as a retrofit for all NG's.
 
Yukon880
Posts: 156
Joined: Mon Sep 05, 2011 7:26 am

RE: 737 Ground Power Question

Mon Aug 06, 2012 9:43 am

And for any of those that have ever "plugged-in" in such a fashion, the reasoning behind the change is crystal.
Pratt & Whitney, In thrust we trust!
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: 737 Ground Power Question

Mon Aug 06, 2012 10:20 am

To avoid the Cable + connector load bearing excessively on the plug point....A chain/cable to the lower end of the plug was used ending in a hook that used to hold the inner wall of the panel,This used to relieve the excess load.
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