SXDFC
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White Oval Device On A 737?

Sat Feb 16, 2013 7:15 pm

Hello All:

Was working A/C 496WN the other night, and I came across the white oval device as seen in the picture below. I've noticed many of our 737s ( both -300 and -700's ) have this and was always curious about the overall purpose of it.

http://i1208.photobucket.com/albums/cc368/737-8H4/71EBC4CE-F041-4943-BA3A-99DD3CF4476D-2322-000002061BB6F342_zpsfed44578.jpg
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
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kanban
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 4:38 am

a deer whistle?   
 
unattendedbag
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 11:10 am

Quoting SXDFC (Thread starter):
was always curious about the overall purpose of it.

Boeing forgot to remove the anti-theft security sensor before delivery.
Slower traffic, keep right
 
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aerdingus
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 1:38 pm

Quoting unattendedbag (Reply 2):
Boeing forgot to remove the anti-theft security sensor before delivery.

BEEP!

I´m no expert, but here goes, is it a static port or something....
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zanl188
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 4:19 pm

I just went thru 600 some 737 nose pictures trying to better define the white ovals, didn't come up with much.

However it does seem to be fairly recent. And it's located about where the airstair controls are on aircraft so equipped.

I'll suggest it's part of the upgrade mentioned in this thread:

Southwest 737-300s To Get New Flight Deck (pic) (by IAD787 Dec 22 2008 in Civil Aviation)


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Photo © Ben Cowden
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Photo © Ben Cowden


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Photo © Tim Perkins
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Photo © Thomas Brackx


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Photo © Szabolcs Kelemen

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barney captain
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 4:55 pm

I can't recall the specifics, but it's an atmospheric sensor that reads and sends back real-time information to (I think) NOAA. I'm heading to wok today, so I'll see if I can't get more details.

Btw, the upgrade to the classic's mentioned in ZAN's link is DOA.

[Edited 2013-02-17 08:59:58]

[Edited 2013-02-17 09:02:46]
Southeast Of Disorder
 
zanl188
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 5:12 pm

Quoting barney captain (Reply 5):
I can't recall the specifics, but it's an atmospheric sensor that reads and sends back real-time information to (I think) NOAA. I'm heading to wok today, so I'll see if I can't get more details.

Excellent... When in doubt ask the man who flies one...

Quoting barney captain (Reply 5):
Btw, the upgrade to the classic's mentioned in ZAN's link is DOA.

I gave it a shot...

Water vapor sensor. Looks like a joint Southwest/ARINC/NOAA project...

https://sites.google.com/a/wmo.int/amdar-news-and-events/volume-4-october-2012/thewatervaporsensingprogrampresentandfuture

http://www.spectrasensors.com/wvss/
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barney captain
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RE: White Oval Device On A 737?

Sun Feb 17, 2013 11:34 pm

Great info ZAN, nice find!
Southeast Of Disorder
 
737tdi
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RE: White Oval Device On A 737?

Mon Feb 18, 2013 5:53 am

Wow, Barney Captain, someone pays attention. You are right and so is ZAN. I think we only have 4 aircraft that have these installed. I can't recall the exact date these were done but it has been 3 or 4 years on the classic.
 
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HAWK21M
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RE: White Oval Device On A 737?

Mon Feb 18, 2013 8:31 am

Quoting barney captain (Reply 5):
but it's an atmospheric sensor that reads and sends back real-time information to (I think) NOAA

Anyone having more Info on this sensor......
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cornutt
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RE: White Oval Device On A 737?

Mon Feb 18, 2013 5:58 pm

Quoting unattendedbag (Reply 2):
Boeing forgot to remove the anti-theft security sensor before delivery.

"Excuse me, sir, is that a 737 in your pants or do you just really like shopping here?"  
 
737tdi
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RE: White Oval Device On A 737?

Tue Feb 19, 2013 7:22 pm

Quoting HAWK21M (Reply 9):

Not off the top of my head but when I get back to work I will research and post it up. Its not something I can access from home.
 
barney captain
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RE: White Oval Device On A 737?

Tue Feb 19, 2013 9:25 pm

Quoting HAWK21M (Reply 9):
Anyone having more Info on this sensor......

Did you see ZAN's link? It was pretty comprehensive.

Quoting ZANL188 (Reply 6):
http://www.spectrasensors.com/wvss/
Southeast Of Disorder
 
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HAWK21M
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RE: White Oval Device On A 737?

Wed Feb 20, 2013 10:56 am

Quoting Barney Captain (Reply 12):
http://www.spectrasensors.com/files/394

I did......Any Boeing reference material though.
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yeelep
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RE: White Oval Device On A 737?

Wed Feb 20, 2013 7:12 pm

Quoting HAWK21M (Reply 13):
I did......Any Boeing reference material though.

Its installed by STC, probably no Boeing documentation.

From reply 6 link:
FAA Supplemental Type Certifications (STC) for:
- B757-200PF
- B737-300
- B737-700
 
dairbus
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RE: White Oval Device On A 737?

Wed Feb 20, 2013 9:20 pm

A friend who works in SWA engineering told me that they have the sensor installed on about 60 aircraft (about half on-300's, half -700s). They are looking to install them on -800s but they haven't done any of them yet.

The program is a partnership with the National Weather Service. Rumor is the NWS is absolutely thrilled with the data they get from the airplanes. They also have other airlines participating in the experiment but he doesn't know who.
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zanl188
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RE: White Oval Device On A 737?

Wed Feb 20, 2013 11:35 pm

Quoting dairbus (Reply 15):
The program is a partnership with the National Weather Service. Rumor is the NWS is absolutely thrilled with the data they get from the airplanes. They also have other airlines participating in the experiment but he doesn't know who.

From the Spectra Sensor website:

4.0 State of the WVSS-II Network in the U.S.


As of June 2012, there are 56 WVSS-II equipped aircraft in the U.S. network, including 25 units installed on UPS 757-200 aircraft, and 31 units installed on Southwest Airlines (SWA) 737-300 aircraft. An additional 36 units are scheduled for installation in 2012 on SWA 737­700 aircraft. Figure 3 illustrates the data collected from the aircraft that were in operation within the U.S. during a 24 hour period, June 13, 2012. While there are still many areas in space and time that have yet to be covered, this demonstrates the growing spatial and temporal coverage that is obtained through aircraft observations with WVSS-II.



There are 12 WVSS-II units currently delivered to various organizations in Europe for use in operational and research applications. Short term plans are in place for further expansion in Europe. The Australian Bureau of Meteorology has also begun to expand their AMDAR network, starting with 3 WVSS-II units in 2012. Planning is underway for implementations at various other National Meteorological and Hydrological Services around the world.


While researching this topic earlier I'm quite sure I saw that LH was the European participant in the program.
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737tdi
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RE: White Oval Device On A 737?

Thu Feb 21, 2013 6:50 am

Quoting ZANL188 (Reply 16):

Wow, I sure didn't know we had that many installed.

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