phljjs
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US Airways Express Emergency Landing At PHL

Fri Sep 30, 2011 9:32 pm

The local FOX station just showed a CRJ sitting near RWY 17-35 with the over wing emergency exit open. Plane is N256PS and was flying Knoxville-PHL. The cause of the emergency was smoke in the cabin. They did not show any passengers on the airfield, but the plane was surrounded by Police and Fire vehicles.
 
apodino
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RE: US Airways Express Emergency Landing At PHL

Fri Sep 30, 2011 9:48 pm

One of the few PSA RJ flights in PHL, since most of them are Air Wisconsin these days. My prayers go out to everyone involved and hopefully no one was hurt.
 
phljjs
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RE: US Airways Express Emergency Landing At PHL

Fri Sep 30, 2011 9:49 pm

The news is now reporting that the passengers were taken off of the plane and moved to a bus. No injuries have been reported.
The plane has been moved to a gate and it appears that over-wing exits on both sides of the plane were opened.

Is this a case of panicking passengers who opened the exits without instruction from a crew? Or was there an evacuation?

[Edited 2011-09-30 14:49:55]
 
apodino
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RE: US Airways Express Emergency Landing At PHL

Fri Sep 30, 2011 9:53 pm

Quoting PHLJJS (Reply 2):
Is this a case of panicking passengers who opened the exits without instruction from a crew? Or was there an evacuation?

I am going to guess this was an evacuation. For one thing, opening an exit on a pressurized aircraft can be dangerous, especially if the pressurization is wrong, because when the door is opened, if the cabin is pressurized passengers and objects can literally be sucked out. Secondly, if the passenger door was able to be opened, it is preferable for passengers to deplane this way, and thirdly, the Overwing exits take some effort to open, and without an evacuation the flight attendant likely would stop a passenger from doing so.
 
phljjs
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RE: US Airways Express Emergency Landing At PHL

Sat Oct 01, 2011 2:19 am

Quoting apodino (Reply 3):
I am going to guess this was an evacuation.

You guessed right. Just saw an updated report on the news. The video showed all of the passengers standing on the apron of the taxiway, near some grass.

One of the reasons I questioned if it was an evac or not was because on the video the doors of the plane appeared to still be closed. At Least the 1R door was. Is it normal for an evac of a CRJ to just utilize the over-wing exits and not the front doors too? I know if there's a fire or other hazard, you wouldn't use the affected exit, but I didn't notice anything apparent that would cause the 1R door to not be opened and utilized during an evacuation.
 
arffguy
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RE: US Airways Express Emergency Landing At PHL

Sat Oct 01, 2011 5:16 am

Quoting apodino (Reply 3):
For one thing, opening an exit on a pressurized aircraft can be dangerous, especially if the pressurization is wrong, because when the door is opened, if the cabin is pressurized passengers and objects can literally be sucked out.

The aircraft was on the ground and probably wasn't pressurized at that point.
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Goldenshield
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RE: US Airways Express Emergency Landing At PHL

Sat Oct 01, 2011 8:29 am

Quoting apodino (Reply 3):
For one thing, opening an exit on a pressurized aircraft can be dangerous, especially if the pressurization is wrong, because when the door is opened, if the cabin is pressurized passengers and objects can literally be sucked out.

They wouldn't even be able to open the door if the plane was pressurized. Plus, since it was on the ground, the pressue was already dumped.
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Markhkg
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RE: US Airways Express Emergency Landing At PHL

Sat Oct 01, 2011 8:41 am

Quoting apodino (Reply 3):
For one thing, opening an exit on a pressurized aircraft can be dangerous, especially if the pressurization is wrong, because when the door is opened, if the cabin is pressurized passengers and objects can literally be sucked out.

In this case, the overwing exit - since it a plug type design - would have been impossible to open if the aircraft was pressurized. Although plug type doors are more clumsy, they provide inherent protection against opening an exit when the cabin is pressurized.

Quoting Goldenshield (Reply 6):
They wouldn't even be able to open the door if the plane was pressurized.

This is true (in general) but there have been several cases where a small pressure differential on Airbus A300 aircraft during door opening were able to be overcome by the cabin crew, causing the door to "burst" open resulting in the condition apodino mentioned. This has happened at least twice, once during an evacuation of an AA aircraft back in 2000. The red "pressure warning" light on Airbus doors do not provide a warning if the doors are still in the "armed" mode.

The "bursting" of the door can occur on Airbus aircraft as the main cabin doors (a) are not plug type designs and (b) do not incorporate a pressure vent on non-plug type doors (unlike other aircraft, such as Boeing 777 doors or Embraer 170/190 exits).

http://www.iasa.com.au/folders/Safet...sues/Cabin_Safety/deadlydoors.html

[Edited 2011-10-01 01:41:58]
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Goldenshield
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RE: US Airways Express Emergency Landing At PHL

Sat Oct 01, 2011 8:55 am

Quoting Markhkg (Reply 7):
This is true (in general) but there have been several cases where a small pressure differential on Airbus A300 aircraft during door opening were able to be overcome by the cabin crew, causing the door to "burst" open resulting in the condition apodino mentioned. This has happened at least twice, once during an evacuation of an AA aircraft back in 2000. The red "pressure warning" light on Airbus doors do not provide a warning if the doors are still in the "armed" mode.

While I can agree with you about the Airbus thing, it's absurd to apply it to this topic. We're talking about CRJ emergency doors here. They are plug type, and still amazingly hard to break the seal with a small pressure differential. And even IF someone managed to break the seal, that door would still be in the way.
Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.