Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Clouds In The Cabin?  
User currently offlineIFEMaster From , joined Dec 1969, posts, RR:
Posted (7 years 8 months 2 weeks 2 days 17 hours ago) and read 5471 times:

Take a look at this picture in large format, specifically the overheac bins on the right. What's with the cloud/steam/smoke/mist in the cabin??


View Large View Medium
Click here for bigger photo!

Photo © Mike Moores



37 replies: All unread, showing first 25:
 
User currently offlineFlyabunch From United States of America, joined Nov 2004, 517 posts, RR: 4
Reply 1, posted (7 years 8 months 2 weeks 2 days 17 hours ago) and read 5448 times:

This phenomenon happens quite frequently in humid climates. The outside moisture enters the plane thru the open doorway and the moisture is picked up by the air conditioning and blown around. It usually freaks out people that have not seen it. There is actually enough moisture that when you put your hand in the air stream, it will get wet.

The moisture usually dissipates after the doors are closed. If there is a real excess of moisture, sometimes it doesn't go away until after takeoff.

I used to call TPA my home airport and I saw this situation a lot in the humid summer months.

Mike


User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 2, posted (7 years 8 months 2 weeks 2 days 17 hours ago) and read 5433 times:

This was just asked a few days back... If the weather conditions are right and the humidity is high this will happen. VERY-VERY common in the summer time


"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineIFEMaster From , joined Dec 1969, posts, RR:
Reply 3, posted (7 years 8 months 2 weeks 2 days 17 hours ago) and read 5433 times:

Wow...I have never seen this before. It's totally weird.

User currently offlineHiflyer From United States of America, joined Nov 2004, 2153 posts, RR: 3
Reply 4, posted (7 years 8 months 2 weeks 2 days 17 hours ago) and read 5417 times:

Don't know why but I see it far more on airbus products down in Florida than on any other....have seen an almost white out on the 320 just after deplaning...grin!

User currently offlineSAS333 From United States of America, joined Jun 2006, 23 posts, RR: 0
Reply 5, posted (7 years 8 months 2 weeks 2 days 17 hours ago) and read 5401 times:

Some years ago, I have seen it on a Qantas 717 in BNE. Some people start really to freak out, until the captain did an announcement.
When you see it in reality, it looks just fantastic.


User currently offlineSkyexRamper From , joined Dec 1969, posts, RR:
Reply 6, posted (7 years 8 months 2 weeks 2 days 16 hours ago) and read 5298 times:

There have been many times when the F/A on our jets would open the door and the "fog" comes pouring down the steps, kind of freaky to see. Not to mention on the hot days you can see the a/c flowing up the cockpit windows.

User currently offlineJetBlueGuy2006 From United States of America, joined Jan 2006, 1630 posts, RR: 1
Reply 7, posted (7 years 8 months 2 weeks 2 days 13 hours ago) and read 5145 times:

Yeah, I flew back from PHF and that happened on my FL Flight from ATL to FNT


Home Airport: Capital Region International Airport (KLAN)
User currently offlineNomadic From United States of America, joined Apr 2004, 415 posts, RR: 0
Reply 8, posted (7 years 8 months 2 weeks 2 days 13 hours ago) and read 5131 times:

I have seen it once in a while on various aircraft but it happened EVERY time I have flown on a Pulkovo Aviation IL-86.
Moscow & St. Petersburg can get very humid during the summer but I am beginning to think it might have more to do with the actual ventilation system.

nomadic:?)


User currently offlineSulman From United States of America, joined Mar 2004, 2035 posts, RR: 33
Reply 9, posted (7 years 8 months 2 weeks 2 days 13 hours ago) and read 5125 times:

Saw this coming back from JFK on a VS A346.


It takes a big man to admit they are wrong, and I am not a big man.
User currently offlineFalstaff From United States of America, joined Jun 2006, 5961 posts, RR: 27
Reply 10, posted (7 years 8 months 2 weeks 2 days 13 hours ago) and read 5103 times:
Support Airliners.net - become a First Class Member!

I used to have a 64 Mercury Comet that would do that when you first turned on the AC after getting in on a very hot and humid St. Louis summer day. Never seen it on a plane, that is cool! Literally.


My mug slaketh over on Falstaff N503
User currently offlineOutlier From , joined Dec 1969, posts, RR:
Reply 11, posted (7 years 8 months 2 weeks 2 days 13 hours ago) and read 5097 times:

Fly around Hawaii and you'll see fog on many occaisions.

The first time I noticed it, I asked the guy next to me:
Are we making a movie?


My mother tells a story of a SEA-HNL flight on Pan Am where
"It rained. I'm telling you it rained" Uh huh, ok ma, whatever!
Took me a few years to believe her.


User currently offlineZeke From Hong Kong, joined Dec 2006, 8638 posts, RR: 75
Reply 12, posted (7 years 8 months 2 weeks 2 days 12 hours ago) and read 4988 times:

Quoting EMBQA (Reply 2):
This was just asked a few days back... If the weather conditions are right and the humidity is high this will happen. VERY-VERY common in the summer time

Discussed here Some Sort Of Smoke In Cabin While Acr On Ground (by A380CGN Jul 28 2006 in Tech Ops)



We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
User currently offlineSP90 From United States of America, joined May 2006, 388 posts, RR: 0
Reply 13, posted (7 years 8 months 2 weeks 2 days 10 hours ago) and read 4912 times:

Happens to me a lot when I turn on the a/c in my car during the hot and humid days. I see white smoke blowing out of the vents. Its almost like the vents are the engine exhaust ports and their pulling contrails.  Big grin

User currently offlineMarkabcan From Canada, joined Dec 2005, 205 posts, RR: 0
Reply 14, posted (7 years 8 months 2 weeks 2 days 10 hours ago) and read 4902 times:

Just happened to me on a Northwest Airbus 320, MSP-YYC! It was crazy inside the cabin at MSP, white vapor going everywhere. Cleared up sometime during taxi.

[Edited 2006-08-06 01:32:50]

User currently offlineOutlier From , joined Dec 1969, posts, RR:
Reply 15, posted (7 years 8 months 2 weeks 2 days 10 hours ago) and read 4890 times:

Just as a reminder: its not smoke, its vapor.

User currently offlineLucky42 From , joined Dec 1969, posts, RR:
Reply 16, posted (7 years 8 months 2 weeks 2 days 8 hours ago) and read 4796 times:

Quoting Zeke (Reply 12):
My mother tells a story of a SEA-HNL flight on Pan Am where
"It rained. I'm telling you it rained" Uh huh, ok ma, whatever!
Took me a few years to believe her.

Anyone who has flown on an NW DC-9 a lot and were in the last rows in the summer will probably tell you they got wet....water would collect on hot humid days and when the a/c rotated they would get a waterfall effect in the last rows coming out of the PSU's. After NW went to the new interiors in the DC-9 the fasten seat belt sign and F/A call button were all controlled in each row were controlled with a curcuit board so when this would get wet would would see the call chime and reading lights in a particular row would go on and off....


User currently offlineZeke From Hong Kong, joined Dec 2006, 8638 posts, RR: 75
Reply 17, posted (7 years 8 months 2 weeks 2 days 4 hours ago) and read 4679 times:

Lucky42

I did not say any of that.



We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
User currently offlineLongHauler From Canada, joined Mar 2004, 4757 posts, RR: 43
Reply 18, posted (7 years 8 months 2 weeks 1 day 19 hours ago) and read 4513 times:

Take it even further .... after airborne, as the packs achieve full efficiency with engine bleed source as opposed to APU bleed source, and it starts SNOWING in the cabin.

I see it alot after departure from BGI in an A319.



Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
User currently offlineLufthansi From Germany, joined May 2002, 454 posts, RR: 2
Reply 19, posted (7 years 8 months 2 weeks 1 day 19 hours ago) and read 4498 times:

In TAM's A330s I got ice-cubes served through the instrument panel outlets of the air conditioning. That's cool! But it only works when it's very hot at CDG and when the pack selector switches are in high position and temp. selectors to cold.


Life starts at take-off!
User currently offlineMD80fanatic From United States of America, joined Apr 2004, 2659 posts, RR: 10
Reply 20, posted (7 years 8 months 2 weeks 1 day 19 hours ago) and read 4487 times:

That is water vapour, and it's inside the cabin at all times (even if in the desert). Assuming normal flight pressures...when this vapour is cooled by the air conditioning vent it will momentarily condense into a liquid that is visible. Once the now-liquid water warms again, past the air conditioning stream, it will re-evaporate into it's normal invisible gaseous state.

User currently offlineZeke From Hong Kong, joined Dec 2006, 8638 posts, RR: 75
Reply 21, posted (7 years 8 months 2 weeks 1 day 19 hours ago) and read 4469 times:

Quoting LongHauler (Reply 18):
Take it even further .... after airborne, as the packs achieve full efficiency with engine bleed source as opposed to APU bleed source, and it starts SNOWING in the cabin.

I see it alot after departure from BGI in an A319.

Pack flow reduces with engine bleed, on HIGH with APU/ext high press, NORM with engines.

Quoting MD80fanatic (Reply 20):
That is water vapour, and it's inside the cabin at all times (even if in the desert). Assuming normal flight pressures...when this vapour is cooled by the air conditioning vent it will momentarily condense into a liquid that is visible. Once the now-liquid water warms again, past the air conditioning stream, it will re-evaporate into it's normal invisible gaseous state.

That will depend on the relative humudity and temperature split from dew point.



We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
User currently offlineIDISA From Italy, joined Jun 2004, 260 posts, RR: 0
Reply 22, posted (7 years 8 months 2 weeks 1 day 19 hours ago) and read 4445 times:

This phenomenon had happened to me once on a HAV-FCO flight, while at the gate, doors closed and pushback started. Some clouds of vapor started soaring and I remember an old lady sat next to me being freaking out and asked me what was happening...

User currently offlineLongHauler From Canada, joined Mar 2004, 4757 posts, RR: 43
Reply 23, posted (7 years 8 months 2 weeks 1 day 18 hours ago) and read 4381 times:

Quoting Zeke (Reply 21):
Pack flow reduces with engine bleed, on HIGH with APU/ext high press, NORM with engines.

If the selector is left in NORM, however out of Caribbean destinations, we select HI, to quickly cool the cabin.



Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
User currently onlineAlitaliaMD11 From Spain, joined Dec 2003, 4068 posts, RR: 14
Reply 24, posted (7 years 8 months 2 weeks 1 day 18 hours ago) and read 4372 times:

Had the same thing happen to me on an Iberia A340-600 when we arrived at JFK.


No Vueling No Party
25 Crogalski : haha yeah, TPA is famous for that.
26 Post contains images KPDX : I saw this cool phenomenon when we were in our Frontier A319 taxing for our flight to DEN from DFW. KPDX
27 United_fan : I saw it last week on my ASA CR7 flight to ATL . Neat to see.
28 Post contains links and images Cadet57 : As others have said, its condensation from the outside. It has happened on both US flights I took to AUA; Shameless self plug ahead MyAviation.net pho
29 SkyTaxi : On a return flight from Mexico our plane had to stop in Monterrey (Mexico) for fuel,We sat on the tarmac for maybe an hour before the fuel truck showe
30 Post contains images Scbriml : I've seen this quite often, but I must say that I can only ever remember seeing it happen on Airbus planes.
31 Afay1 : I too have only seen it (vapor) on Airbus planes, but have seen actual water dripping from various Soviet aircraft.
32 Zeke : The selector has no effect on the ground at all with the APU only running, if you are doing it "to quickly cool the cabin down" (non standard) after
33 Jetfan : I have seen it raining on a DL 732 in MSY! FAs started to give out blankets, because at some seats it was raining onto passengers and some seats were
34 Brenintw : I've seen this a few times on B744's -- most obviously a full SQ flight from SIN - TPE -- the poor child sitting next to me was getting very wet. I e
35 MSPGUY : I was sitting in the last row of a NW DC10 MSP-LGW and had this happen upon desent in LGW. The F/A's were joking with me that NorthWest inculds a fre
36 LongHauler : I say again .... once airborne .... engine bleeds .... APU not an issue here!
37 EmSeeEye : The Challenger CL600's (600, 601 and 604) are notorious for doing this. More than once the big wigs who owned the planes look back when driving off an
Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Taking Photographs In The Cabin posted Sat Aug 19 2006 13:42:03 by Baguy
Air Canada Ban Pets In The Cabin posted Fri May 12 2006 17:49:39 by AIRCANL1011
Wing Spars In The Cabin? posted Tue Dec 27 2005 18:55:03 by Timz
Ring Tones In The Cabin During Flight posted Thu Jul 21 2005 20:49:34 by Mainrunway
CO 777 Smoke In The Cabin? posted Mon May 2 2005 04:18:18 by ContinentalCLE
MD-88 Noise In The Cabin posted Sun Apr 24 2005 22:16:14 by DC10Heavy
Insecticide Spraying In The Cabin In Malarial Zone posted Thu Mar 3 2005 13:32:07 by Orion737
How Old Can You Be To Work In The Cabin? posted Thu Jun 10 2004 20:51:05 by Bofredrik
Lowest Number Of Passengers In The Cabin. posted Wed Apr 21 2004 00:23:22 by Embraer145
Humidity In The Cabin posted Fri Nov 14 2003 21:26:32 by Pilotman52