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Do You Get Drenched, When Opening The Cargo Door?  
User currently offlineMechEngineer From Germany, joined Jun 2006, 46 posts, RR: 0
Posted (8 years 6 months 1 week 6 days 15 hours ago) and read 4537 times:

Looking at a freighter's cargo door design, I was surprised to find the door structure stuffed with insulation material, even though this is known to soak with water in flight and weigh down the aircraft, which doesn't carry passengers with comfort requirements at all.
The reason, I was told, was that the insulation "reduces the amount of water that falls on the guy opening the cargo door."

Is that correct? Is water draining from inside the door structure a problem when you open the cargo door on the ramp?


Heavier-than-air flying machines...
22 replies: All unread, jump to last
 
User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 1, posted (8 years 6 months 1 week 6 days 14 hours ago) and read 4493 times:

Quoting MechEngineer (Thread starter):
I was surprised to find the door structure stuffed with insulation material

The cargo aircraft I've seen have little to no insulation. Packages don't care if it's cold or noisey.



"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineAogdesk From United States of America, joined Jun 2004, 935 posts, RR: 3
Reply 2, posted (8 years 6 months 1 week 6 days 14 hours ago) and read 4490 times:

Most cargo doors that I've seen have minimal amounts of insulation in them, though rain collection on the interior structure of the door seems to be less of an issue than water entering the cargo area and dispersing into areas other than intended drain ports. As far as the guy on the ground, if he's standing in the right position, he'll get drenched when the door closes from all that standing water on top of it. (Its a perfect place for the newbie)  Wink

User currently offlineFr8Mech From United States of America, joined Sep 2005, 5660 posts, RR: 15
Reply 3, posted (8 years 6 months 1 week 6 days 14 hours ago) and read 4487 times:

Where to start:

-A properly designed and maintained door will not allow water into it.
-Any water that may get into a properly designed and maintained door will drain out through the drain holes, it will not accumulate.
-I don't recall seeing any insulation inside a door. The exception is a main cargo door on a convertible. If the aircraft may carry either pax or cargo, the main cargo door should be insulated.
-The lower door may have insulation as part of the liner, especially in a compartment that may hold live animals.

I've opened, literally, thousands of doors, main, lower and bulk, powered and unpowered, and never got soaked because of it.



When seconds count...the police are minutes away.
User currently offlineKaddyuk From Wallis and Futuna, joined Nov 2001, 4126 posts, RR: 25
Reply 4, posted (8 years 6 months 1 week 6 days 13 hours ago) and read 4452 times:

The insulation on aircraft is supposed to be insulated so that moisture ingress will be minimal. And once the moisture is inside the insulation, it stays there.

I've never got wet from a cargo bay door...



Whoever said "laughter is the best medicine" never had Gonorrhea
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 5, posted (8 years 6 months 1 week 6 days 13 hours ago) and read 4445 times:

Quoting MechEngineer (Thread starter):
I was surprised to find the door structure stuffed with insulation material,

Not all Freighters remove Every Insulation Blanket.
Theres no access for this Insulation on the MCD to get soaked.

During Cargo Loading Ops on the Main Deck.The MCD is usually in the Canopy position.Rain Still rushes in Anyway.As long as the Fuselage/Flooring drains are Effective.No panic.
regds
MEL



Think of the brighter side!
User currently offlineN8076U From United States of America, joined Jun 2006, 425 posts, RR: 9
Reply 6, posted (8 years 6 months 1 week 6 days 8 hours ago) and read 4320 times:

Can't speak of main deck cargo doors, but the only water I've seen come out of a cargo door would be from a Boeing outward opening lower lobe cargo door. There is usually a cup or two of water that collects behind the seal depressor (not inside the door itself but at the bottom edge) after a flight, as the design creates a channel for the water to collect in, probably not meant to do that, but it happens anyways, which pours onto the ground when you open the door. The 747 is the worst offender, at least in my experience at UAL.

Chris



Don't blame me, I don't work here...
User currently offlineFredT From United Kingdom, joined Feb 2002, 2185 posts, RR: 26
Reply 7, posted (8 years 6 months 1 week 5 days 22 hours ago) and read 4194 times:

A few pallets of red wine which shifted in flight and broke a lot of bottles. Yes, I got drenched when opening the cargo door. Took forever before my work clothes stopped making me stink like a wino...


I thought I was doing good trying to avoid those airport hotels... and look at me now.
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 8, posted (8 years 6 months 1 week 5 days 21 hours ago) and read 4181 times:

Quoting FredT (Reply 7):
Yes, I got drenched when opening the cargo door. Took forever before my work clothes stopped making me stink like a wino...

Was your mouth open at that time  Smile
When the MCD on a freighter is opened after it Arrives from a Destination that experienced heavy rain.A bit of water trapped near the Seal Depresser flows out.
regds
MEL



Think of the brighter side!
User currently offlineAogdesk From United States of America, joined Jun 2004, 935 posts, RR: 3
Reply 9, posted (8 years 6 months 1 week 5 days 16 hours ago) and read 4140 times:

Not quite sure where the water collects when the main deck and lower doors is/are open, but I ALWAYS try to make sure that someone is standing underneath when I close it. Not enough to really piss someone off, but definitely enough to surprise them. Guess I have too much time on my hands huh?

User currently offlineN8076U From United States of America, joined Jun 2006, 425 posts, RR: 9
Reply 10, posted (8 years 6 months 1 week 5 days 12 hours ago) and read 4086 times:

When we'd offload Air China, and they happened to have a pallet of monkeys on board, whew! After that many hours locked up in the aft cargo pit, that was quite the odor, and it seemed to stick to everyone. I'd rather smell like a wino...


Don't blame me, I don't work here...
User currently offlineSudden From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 11, posted (8 years 6 months 1 week 5 days 11 hours ago) and read 4078 times:

Quoting FredT (Reply 7):
A few pallets of red wine which shifted in flight and broke a lot of bottles.

I assume that bird was AOG for a while as red wine and aicrafts is not a good combination.

Aim for the sky!
Sudden



When in doubt, flat out!
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 12, posted (8 years 6 months 1 week 4 days 18 hours ago) and read 3986 times:

Quoting Sudden (Reply 11):
I assume that bird was AOG for a while as red wine and aicrafts is not a good combination

Is that a serious statement.Did not quite get it.Are you implying at Corrosion or Joking.
regds
MEL



Think of the brighter side!
User currently offlineFr8Mech From United States of America, joined Sep 2005, 5660 posts, RR: 15
Reply 13, posted (8 years 6 months 1 week 4 days 16 hours ago) and read 3963 times:

Quoting HAWK21M (Reply 12):
Is that a serious statement.Did not quite get it.Are you implying at Corrosion or Joking.

Red wine can be rather acidic and may cause damage to unprotected metal.



When seconds count...the police are minutes away.
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 14, posted (8 years 6 months 1 week 4 days 11 hours ago) and read 3937 times:

Quoting Fr8Mech (Reply 13):
Corrosion or Joking.

Red wine can be rather acidic and may cause damage to unprotected metal.

Thanks.I guess its tough reading thru words.
Are there special Cleaning measures in case of Spill.
regds
MEL



Think of the brighter side!
User currently offlineSudden From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 15, posted (8 years 6 months 1 week 3 days 23 hours ago) and read 3887 times:

Quoting Fr8Mech (Reply 13):
Red wine can be rather acidic and may cause damage to unprotected metal.

Yes, this is what I meant.
We ones had 1 broken bottle of red wine in the aft hold of a 737 and the fluid found it's way down under the aft holds floor, so that A/C didn't move much that day.

Aim for the sky!
Sudden



When in doubt, flat out!
User currently offlineN8076U From United States of America, joined Jun 2006, 425 posts, RR: 9
Reply 16, posted (8 years 6 months 1 week 3 days 23 hours ago) and read 3884 times:

You should see what happens under the floor after transporting some horses. That gives a whole new meaning to the word "corrosion".  Wink

Chris



Don't blame me, I don't work here...
User currently offlineSudden From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 17, posted (8 years 6 months 1 week 3 days 23 hours ago) and read 3880 times:

Can only imagine.

Guess those are the times you are thinking about a career change.  Wink

Aim for the sky!
Sudden



When in doubt, flat out!
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 18, posted (8 years 6 months 1 week 3 days 22 hours ago) and read 3872 times:

Getting that Liquid out & Neutralizing the efect would be tough.
regds
MEL



Think of the brighter side!
User currently offlineSudden From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 19, posted (8 years 6 months 1 week 3 days 20 hours ago) and read 3853 times:

Quoting N8076U (Reply 16):
N8076U

Welcome to A.net by the way.

Aim for the sky!
Sudden



When in doubt, flat out!
User currently offlineMechEngineer From Germany, joined Jun 2006, 46 posts, RR: 0
Reply 20, posted (8 years 6 months 4 days 14 hours ago) and read 3645 times:

OK, thanks for the info, everyone. Apparently insulation in the cargo door is mostly additional weight to carry on the aircraft.


Heavier-than-air flying machines...
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 21, posted (8 years 6 months 4 days 13 hours ago) and read 3625 times:

Quoting MechEngineer (Reply 20):
Apparently insulation in the cargo door is mostly additional weight to carry on the aircraft.

Amazing how Light a Converted Freighter can Get  Smile
regds
MEL



Think of the brighter side!
User currently offlineScarebus03 From Ireland, joined Apr 2005, 305 posts, RR: 0
Reply 22, posted (8 years 6 months 1 day 14 hours ago) and read 3510 times:

Yes!

everytime it rained in DUB  Smile


BRGDS

SB03



No faults found......................
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