Gonzalo
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Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 3:23 pm

I know this is not the first case in history, but is certainly a not so common occurrance.... How can the slides deploy with the doors firmly closed and with the speed at that stage of the flight ???

I guess is not the best experience for the average "nervous" passenger    http://avherald.com/h?article=46b1cead&opt=0

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washingtonflyer
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 3:28 pm

That must suck. I heard from a very close friend (whose son is engaged to an OZ flight attendant and who was on OZ 214), that one of the flight attendants was nearly killed because the slide deployed inside the plane after the crash landing, and pressed her into a wall. They had to use a couple axes to deflate the chute, and the FA was half-blue by the time she could be freed.
 
catiii
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 3:31 pm

According to the AvHerald report: "The slide subsequently separated from the aircraft."

I wonder where it came down, and if it can be found?

Quoting washingtonflyer (Reply 1):
That must suck. I heard from a very close friend (whose son is engaged to an OZ flight attendant and who was on OZ 214), that one of the flight attendants was nearly killed because the slide deployed inside the plane after the crash landing, and pressed her into a wall. They had to use a couple axes to deflate the chute, and the FA was half-blue by the time she could be freed.

Right...but how is that relevant here?
 
Whiteguy
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 3:49 pm

Quoting Gonzalo (Thread starter):
I know this is not the first case in history, but is certainly a not so common occurrance.... How can the slides deploy with the doors firmly closed and with the speed at that stage of the flight ???

I guess is not the best experience for the average "nervous" passenger http://avherald.com/h?article=46b1cead&opt=0

Rgds.
G.-

The over wing slide comes out of the fuselage towards the aft of the wing. It really has nothing to do with the doors!
 
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7BOEING7
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 3:49 pm

Quoting Gonzalo (Thread starter):
I know this is not the first case in history, but is certainly a not so common occurrance.... How can the slides deploy with the doors firmly closed and with the speed at that stage of the flight ???


The slide is in the wing to body fairing and has from time to time come out on its own without door activation, similarly on the 757. Search for inflight slide deployment and you'll find more than a few reports.

http://www.ntsb.gov/aviationquery/br...211X12640&ntsbno=LAX93IA245&akey=1

A Boeing 757 on a B-1 flight out of RNT took off with the advisory light for the slide illuminated (shouldn't have) and the slide deployed, hit the horizontal stabilizer and fell into Lake Washington. Rumor has it that airplane (if still in service NWA/DAL) flies crooked to this day.
 
codc10
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 4:12 pm

Quoting catiii (Reply 2):
I wonder where it came down, and if it can be found?

Odds are this event occurred overwater, and the off-wing ramp slides on the 767 are weighted, so it likely sank.
 
Gonzalo
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 4:25 pm

Quoting codc10 (Reply 5):
Odds are this event occurred overwater, and the off-wing ramp slides on the 767 are weighted, so it likely sank.

This plane was taking off and climbing out from Bogota, Colombia. The sea is very far , so the odds are this event ocurred over land.

Rgds.
G.
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catiii
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 4:31 pm

Quoting 7BOEING7 (Reply 4):
The slide is in the wing to body fairing and has from time to time come out on its own without door activation, similarly on the 757.

Good video of an example here: http://www.youtube.com/watch?v=xsnAlNpkNuw
 
mhockey31091
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 7:38 pm

That would be a heck of a sight to see out your window!
 
catiii
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 9:13 pm

Is the 767 OW slide actuated when the overwing door is opened?
 
Dalmd88
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 9:25 pm

Quoting catiii (Reply 9):
s the 767 OW slide actuated when the overwing door is opened?

Yes, very quickly I can say with experience. I have not blown one myself, but I was nearby when someone opened the hatch. The disarm procedure is very long and must be followed or it may blow when the slide door is opened for inspection.
 
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7BOEING7
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 9:28 pm

Quoting catiii (Reply 9):
Is the 767 OW slide actuated when the overwing door is opened?

Yes, that's the normal way to get it to deploy--I'm guessing this was an "abnormal" deployment.
 
soon7x7
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 9:59 pm

Quoting catiii (Reply 2):
Right...but how is that relevant here?

It is interesting as these slides are fairly heavy and substantial and while severe damage could potentially occur to the ext airframe, they can in fact kill if deployed in unusual circumstances...I rather liked the added aspect and thread diversion.
 
awthompson
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 10:37 pm

I'm somewhat worried here about the possibility of interference with the horizontal stabilizer in inadvertent escape chute deployment which could lead to serious controllability problems. If too many more of these instances occur, sooner or later we could have a less desirable outcome.
 
kevinkevin
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 10:52 pm

Slightly weird occurrence. But I suppose anything is possible. I don't want to imagine the passenger's, who was sitting next to the OW exit, face while the escape chute erected. What a scary sight.
 
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7BOEING7
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Thu Nov 07, 2013 11:15 pm

Quoting kevinkevin (Reply 14):
I don't want to imagine the passenger's, who was sitting next to the OW exit, face while the escape chute erected. What a scary sight.


He didn't see anything, it probably didn't inflate, was out of his line of sight, just a "thunk" and gone. They probably did have to replace his seat at the next stop though.
 
JAAlbert
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 12:27 am

Quoting whiteguy (Reply 3):
The over wing slide comes out of the fuselage towards the aft of the wing. It really has nothing to do with the doors!

What is the chance a slide could impact the horizontal or vertical stabilizer in flight and cause damage?
 
hangarrat
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 4:37 am

Quoting 7BOEING7 (Reply 15):
They probably did have to replace his seat at the next stop though.

Why would that be?
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7BOEING7
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 4:42 am

Quoting hangarrat (Reply 17):
Why would that be?

Based on the comments from people who were on a 757 once upon a time that deployed a slide inflight, it scared the **** out of them and they weren't sitting anywhere near the wing.
 
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BreninTW
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 4:42 am

Quoting hangarrat (Reply 17):
Why would that be?

I imaging hearing "a loud bang" right next to you would be unnerving for even the most seasoned flier.
 
AR385
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 4:44 am

Quoting JAAlbert (Reply 16):
What is the chance a slide could impact the horizontal or vertical stabilizer in flight and cause damage?

I would GUESS small, since the chute deploys downwards and the airflow over the wing at that point is flowing downwards so the chute will most likely be torn off at an angle downwards.
 
TSS
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 5:22 am

Quoting 7BOEING7 (Reply 18):
Quoting hangarrat (Reply 17):
Why would that be?

Based on the comments from people who were on a 757 once upon a time that deployed a slide inflight, it scared the **** out of them and they weren't sitting anywhere near the wing.
Quoting 7BOEING7 (Reply 18):
Quoting hangarrat (Reply 17):
Why would that be?

I imaging hearing "a loud bang" right next to you would be unnerving for even the most seasoned flier.

Based on what I've seen in films (I know, but it's my only frame of reference), I'd expect the event of the slide deploying to not be particularly noisy in itself- A "pop" as the cover releases followed immediately by "sssss-whump" as the slide inflates like a life raft. However, I'd imagine the sound of a weighted and inflated slide whacking against the outside of the fuselage in the 400 mph breeze a few good times before it finally tore free might be a bit unnerving for the passengers in the rows just aft of the emergency exit.
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Max Q
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 5:35 am

Quoting 7BOEING7 (Reply 18):



Quoting hangarrat (Reply 17):
Why would that be?

Based on the comments from people who were on a 757 once upon a time that deployed a slide inflight, it scared the **** out of them and they weren't sitting anywhere near the wing.

Always an incredibly funny joke.
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babybus
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 9:36 am

Quoting TSS (Reply 21):
inflated slide whacking against the outside of the fuselage in the 400 mph breeze a few good times before it finally tore free might be a bit unnerving for the passengers in the rows just aft of the emergency exit.

Very true. The passengers must have been really scared.

If it was me I would be wondering what else is going to fall off or malfunction.

How does an aircraft handle in such a situation? Does it suddenly veer off course?
and with that..cabin crew, seats for landing please.
 
washingtonflyer
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 2:40 pm

Quoting catiii (Reply 2):
Quoting catiii (Reply 2):

Gee, I don't know...An inflight deployment of a slide in two instances - both of which are under NTSB scrutiny...
 
catiii
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 2:51 pm

Quoting washingtonflyer (Reply 24):
Gee, I don't know...An inflight deployment of a slide in two instances - both of which are under NTSB scrutiny...

Ok, but Asiana 214 was not an "inflight deployment." After the crash, and apparently because of the structural damage to the fuselage and doors, the 1R and (I think) 2R escape slides inflated inward and into the cabin when activated, as opposed to outward.
 
washingtonflyer
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 3:41 pm

Possibly in-flight...if you count the "bounce".
 
catiii
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RE: Overwing Slide Of AA 763 Deployed At FL 250

Fri Nov 08, 2013 4:23 pm

Quoting washingtonflyer (Reply 26):
Possibly in-flight...if you count the "bounce".

The preliminary reports are pretty clear that the inward inflation occurred when the flight attendants activated the door to evacuate. But you knew that from your very close friend's future daughter in-law who was serving as a flight attendant on that flight  Wink

[Edited 2013-11-08 08:24:22]