Strathpeffer
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What Is The Unusual Air Vent In 320 Family Cabins?

Mon Jan 22, 2007 5:19 pm

Last week I flew on a BA A320 and A319. About 0.25 and 0.75 of the way down the cabin there is a small vent located in the dividing wall between two of the overhead racks. On the 319, for example, there is one around row 16. They were definitely present on the right-hand-side rack (facing forward), I didn’t check the left side.

At this location, as well as the vent, there is a wider than normal gap between the overhead rack doors and ‘not a permitted location for cabin divider’ signage. There seemed to be a slight outflow of air from the vent.

I have noticed the same thing on BA’s CFM A320s, and on BD and EI A320 family aircraft.

I assume this is where the various gases to keep us docile are pumped in – am I correct?  Wink

Seriously though, what is it actually for?

Cheers,

PJ
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troubleshooter
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Mon Jan 22, 2007 10:27 pm

This could be the location of the cabin zone temperature sensors. The sensor housings are connected to the lavatory and galley air extraction system which pulls cabin air over the sensor the measure actual cabin temperature.

The A320 series aircraft is divided into three temperature zones (cockpit, fwd cabin, aft cabin) which have an independent regulation.
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WexCan
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Tue Jan 23, 2007 10:24 am

Must have a look out for that on board tomorrow.
 
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HAWK21M
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Tue Jan 23, 2007 1:12 pm

Sounds like the Cabin Zone Temperature sensor & its Fan assy used for provding positive airflow over the sensor.
regds
MEL
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kaddyuk
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Tue Jan 23, 2007 2:28 pm

If it is how you described it certainly is a Cabin zone temp sensor. Wouldn't get too close to them, the filters are usually covered in dust and its not healthy!

Also, if you ever get temperature control problems, take the filter out, clean it, lightly clean the sensor and function again. 3 times in 5 it fixes the problem.
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Tristarsteve
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Wed Jan 24, 2007 3:48 am

Quoting Kaddyuk (Reply 4):
Also, if you ever get temperature control problems, take the filter out, clean it, lightly clean the sensor and func

Where is the filter?
I went and looked on a BA A319 this morning, and the air inlets are there and if you look in there is no visible filter, and its full of fluff! With the air con off you can feel the air being sucked into the sensors down a very narrow slot.
 
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HAWK21M
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Wed Jan 24, 2007 10:38 pm

Quoting TristarSteve (Reply 5):
I went and looked on a BA A319 this morning, and the air inlets are there and if you look in there is no visible filter

There is a Filter on the B737 sensor assys.I wonder why not.What stopps Moisture & Dust accumulating on the Sensor affecting its purpose.
regds
MEL
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cftoa
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Thu Feb 01, 2007 10:03 pm

Quoting Troubleshooter (Reply 1):
This could be the location of the cabin zone temperature sensors.

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kaddyuk
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RE: What Is The Unusual Air Vent In 320 Family Cabins?

Thu Feb 01, 2007 11:23 pm

Quoting TristarSteve (Reply 5):
its full of fluff!

Thats almost exactly what the filter is... its similar to the filter material in your vacuum cleaner, its just a white cloth about 3/8ths thick by 3/4ths by about 3" long... They're a pain in the arse to change on the older planes because you have to take the whole panel off... on newer airframes, they have a pop out cover so you dont have to hassle with screws & panels...
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