MikeM2648 From United States of America, joined Mar 2004, 102 posts, RR: 0 Posted (10 years 8 months 1 week 4 days 10 hours ago) and read 4072 times:
I was on a Northwest DTW-SFO evening flight a few weeks back and noticed something strange as we were on approach to SFO. The weather in SFO was good / skies were clear. There were beads of water rolling down the interior of the exit door in my row. By interior i mean inside of the aircraft. Had I been sitting window instead of aisle I could have touched it It was not a large quantity of water but enough to notice and it didn't seem normal. What would cause this? Thanks,
Pilotpip From United States of America, joined Sep 2003, 3152 posts, RR: 10
Reply 1, posted (10 years 8 months 1 week 4 days 9 hours ago) and read 4033 times:
Probably condensation. It's pretty common on aircraft when it's hot outside and the skin cools during cruise. As the aircraft decends into warmer, humid air the water vapor will condense on the skin. It can happen on the inside as well.
FredT From United Kingdom, joined Feb 2002, 2185 posts, RR: 26
Reply 2, posted (10 years 8 months 1 week 4 days 2 hours ago) and read 3732 times:
An airliner can carry around large amounts of water in the insulation. It is a big problem. Large amounts of money are spent on drying the air... which then leads to other problems, as most of the world's population aren't used to living in dry air and have problems adapting.
I thought I was doing good trying to avoid those airport hotels... and look at me now.
Jafa From United States of America, joined Aug 2003, 782 posts, RR: 4
Reply 3, posted (10 years 8 months 1 week 3 days 21 hours ago) and read 3547 times:
This happens in the summer, when the airplane takesoff water vapor freezes and when the plane decends it melts and drips. Although I haven't seen it on the airbus. I have seen it on the door of the 757 usually after long flights during descent. There have also been occasions where the DC10 doors slides where frozen and couldn't be disarmed. This was after a transAtlantic flight in winter.
As I FA I have to deal with this sometimes and explain it to passengers. Who look at me like I am crazy. The DC9 is the worst when it comes to dripping condensation. Its especially bad over the aft FA jumpseat. This problem goes away in the winter.
Another strange sight is when the air conditioning blowing out the vents becomes visible. Kinda like opening the freezer when its hot in the house. I have had people say "is that smoke?" to which I reply if it was smoke I wouldn't be standing here discussing it with you.
AFHokie From United States of America, joined May 2004, 224 posts, RR: 1
Reply 4, posted (10 years 8 months 1 week 3 days 13 hours ago) and read 3442 times:
A little off topic, but do civil airliners leak rainwater in? Also how much condensation can build up? Can it build up to a gallon or more, or not more than a few tablespoons at most? On more than one occasion I've seen a substantial mass of water come raining down in a C-130 and in C-141's too. I always figured it was a combo of some rainwater leakage and the condensation, but always seemed to be too much to be just condensation
320tech From Turks and Caicos Islands, joined May 2004, 491 posts, RR: 5
Reply 5, posted (10 years 8 months 1 week 3 days 8 hours ago) and read 3394 times:
Rain water shouldn't be able to get into a pressurised airplane - not to say it's never happened. Rain water may be able to build up around door, and drip once the door is opened. In most cases, the water you see will be condensation.
The primary function of the design engineer is to make things difficult for the manufacturer and impossible for the AME.
NoelG From , joined Dec 1969, posts, RR:
Reply 6, posted (10 years 8 months 1 week 2 days 5 hours ago) and read 3269 times:
I was getting dripped on near an exit on a US 752 in November. I asked the FA who said it was nothing to worry about as it's just condensation, from going from the warm climate of MCO to the chilly PHL!