SouthRebels
Topic Author
Posts: 166
Joined: Sat Dec 30, 2000 3:31 am

Emergency Evacuations

Sat Mar 17, 2001 2:32 am

I was just wondering if anybody has been involved in an emergency evacuation. Does anyone know the specifics of the evacuation methods on the upper deck of a 747? Also, how long, if at all, would an A/C float after a ditching?
 
Guest

RE: Emergency Evacuations

Sat Mar 17, 2001 3:01 am

Ever been involve in an emergency evacuation? No

Does an aircraft float? Some would. Proven by this 707 who managed to stay afloat for more than 2 days









For full story: http://www.avweb.com/articles/707swim/index.html

Nicolas

 
SouthRebels
Topic Author
Posts: 166
Joined: Sat Dec 30, 2000 3:31 am

RE: Emergency Evacuations

Sat Mar 17, 2001 3:10 am

I believe the A/C you are refering to, the one from the Far East to SFO, did not really float, the wheels settled in the mud and sand at the bottom of the bay.
 
Guest

RE: Emergency Evacuations

Sat Mar 17, 2001 3:15 am

No, this one is in northwestern Tanzania. Sorry the pic doesn't seems to show up, if you want to view them just follow the link on my first post, you can read the story too.

Nicolas
 
Guest

RE: Emergency Evacuations

Tue Mar 20, 2001 2:37 am

I've never been involved in an evacuation.

The 747 upper deck escape includes a door on either side of the UD (300 & 400), with a huge slide. This is the primary exit, with the backup obviously down the stairs & out a main deck exit. On the old 747s with the small upper deck, there is a very small door with a slide, but it is a backup. The primary exit is down the stairs.
 
A/c train
Posts: 674
Joined: Sun Jun 10, 2001 7:57 am

RE: Emergency Evacuations

Tue Mar 20, 2001 3:08 am

Dont know about 747 UD evac, but I would say that most pod mounted engines wouldn't float although I would say the comet might, Jet engines are huge water vacuums just as with air, ' aerodynamics of air same as water' I would say after speaking with many experts chances of landing and floating on water, very unlikely, there is probarbly someone who could elaborate on this.
 
OldMan
Posts: 207
Joined: Thu Sep 28, 2006 7:38 am

RE: Emergency Evacuations

Tue Mar 20, 2001 10:19 am

I had one planed ditching betweed MIA and Cuba many years ago in a C46 if you know what that is. Loaded with cargo and fuel and a new left engine that lost oil pressure and would not feather on shutdown. Weather was CAVU and we set her down in calm seas next to the good old USA Coastgurad Cutter "Milinda" The F/O and I walked to the exit window in the cabin, walked out to the wing tip and stepped into their little motor launch. Never got my shoes wet and was given the one of the best meals onboard during our return. The C46 sank in about 12 minutes. The name of the Airline was Zantop. Keep the tail behind you! Smile
 
Guest

RE: Emergency Evacuations

Tue Mar 20, 2001 1:26 pm

Oldman,

So the old adage is true, in a piston twin, the 2nd engine will only bring you to the scene of the accident. Smile

Glad to hear that you kept your feet dry  Smile

Would the C46 fly on one engine if you could feather the failed one?
 
Twotterwrench
Posts: 1087
Joined: Tue Jan 16, 2001 5:57 pm

RE: Emergency Evacuations

Tue Mar 20, 2001 2:00 pm

They claim that the CV-580 can be successfully ditched and stay afloat as long as you don't open the MED and stairs. Don't know if I want to try and prove it though. General argument I have heard is that a high wing acft such as the DASH 8 or ATR will not float due to the high center of gravity vs the water line while low wing acft stand a better chance. Mind you, this is lunch room hangar bs for the most part. I can't prove any of it... althought he CV-580 part I got from a guy who knows more about that plane than the guys that built it.
 
242
Posts: 495
Joined: Tue Oct 24, 2000 1:10 pm

RE: Emergency Evacuations

Tue Mar 20, 2001 2:34 pm

Every transport aircraft I've had experience with have all had spring loaded fuselage drains located at several locations along the belly. These drains are spring loaded open when the plane is not pressurized to allow any fluid (water, fuel, hyd fluid, lav juice etc..) to drain. They automaticly close when the aircraft is pressurized.

Now, assuming the aircraft remins intact during a ditching, the second cabin pressure is equalized, the drains will open and allow water in. Yes, the plane may bob around for a few minutes, but I guarantee it'll sink straight to the bottom soon thereafter.
 
OldMan
Posts: 207
Joined: Thu Sep 28, 2006 7:38 am

Ambasaid

Wed Mar 21, 2001 12:58 am

I really don't remember but like most twins at MGW you will most likely just extend your glide until the remaining engine craps out from working to hard.  Smile

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