http://www.airliners.net/aviation-forums/tech_ops/read.main/326084/
Username: SXDFC
Posted 2012-12-02 21:48:29 and read 2250 times.
Hello All:
The other night I worked A/C 270 ( ex Ford 737 ) and noticed that on many of the ex airTran and other second hand 737's we operate, there is some sort of "bar" in the side walls of the bins. I haven't noticed this on any 737's that were delivered directly to WN. My question(s) is what is the function of this bar, and why doesn't SWA opt to have this on its 737's.
FWD Bin A/C 270 ( 737-705 )
FWD Bin A/C 240 ( 737-7H4 )
Username: HAWK21M
Posted 2012-12-03 02:41:57 and read 2186 times.
Bobby..... was the shaped structure going all the way to the ceiling of stops halfway....Not very clear on the pic.....
Username: Dalmd88
Posted 2012-12-03 02:47:12 and read 2180 times.
Does it have holes in it for cargo heat?
Username: yeelep
Posted 2012-12-03 03:10:06 and read 2172 times.
Its a cover for the fwd galley/lav grey water drain tube that ends at the fwd drain mast. Grey water drains through the tube whether its airborne or on the ground. On the aircraft without, the grey water drain tube is above the cargo compartment ceiling. Due to the lack of slope, the grey water doesn't drain through the fwd drain maston the ground. Instead there is a drain valve that opens when on the ground that diverts the grey water to the door sill drain and exits the plane just aft of the NLG wheel well.
I don't know the reasons behind one design or the other, though I personally like the idea of not having the drain/cover in the pit. Mainly due to always having to re-bend the cover retaining clips and sealing the cover with tape. At AS we have only one NG with the drain line in the ceiling, N549AS.
[Edited 2012-12-03 03:56:34]
[Edited 2012-12-03 04:03:53]
Username: HAWK21M
Posted 2012-12-04 01:44:30 and read 1973 times.
Quoting yeelep (Reply 3):
Its a cover for the fwd galley/lav grey water drain tube that ends at the fwd drain mast. Grey water drains through the tube whether its airborne or on the ground.
Isn't it located midway of the Cargo compt & not the lowermost location......
Username: yeelep
Posted 2012-12-04 03:28:15 and read 1950 times.
Not exactly sure what you mean. The cover/tube runs the entire length of the fwd pit, sloping from about three quarters the height of the pit at the front to just above floor level at the back.
Username: HAWK21M
Posted 2012-12-05 03:54:11 and read 1789 times.
Exactly.....3/4th the height .........why 3/4th......
Username: yeelep
Posted 2012-12-05 09:41:24 and read 1734 times.
Because it continues forward of the pit at a constant slope to the lav/galley.
Username: aa777-200
Posted 2012-12-05 17:41:21 and read 1659 times.
Whatever it may be it makes a good ledge to sit on while I am in the bin waiting for more bags to be sent up!
Username: SXDFC
Posted 2012-12-05 22:02:02 and read 1605 times.
Thank you guys for the information! I am sure many of you folks learn new stuff everyday with these amazing machines..
Quoting aa777-200 (Reply 8):
Whatever it may be it makes a good ledge to sit on while I am in the bin waiting for more bags to be sent up!
Its a good seat, but it makes it hard for you to slouch down and take a nap while waiting on the bags! 
Username: HAWK21M
Posted 2012-12-06 09:46:48 and read 1526 times.
Quoting yeelep (Reply 7):
Because it continues forward of the pit at a constant slope to the lav/galley.
Why 3/4th.....why not from the floor height........
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