SK A340
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Cockpit Emergency Exit On The 744

Fri Dec 01, 2006 9:54 pm

Is there an evacuation slide attached or some kind of rope ladder (not very "emergency friendly" solution) to the cockpit emergency exit on the 744? The distance to the ground, even in a "wheel up" landing situation, is quite long. If the pilots use the upper deck exits, when is the cockpit emergency exit used?

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legoguy
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RE: Cockpit Emergency Exit On The 744

Fri Dec 01, 2006 10:46 pm

I'm not sure if that actually is an emergency exit
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miamiair
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RE: Cockpit Emergency Exit On The 744

Fri Dec 01, 2006 11:02 pm

It is an exit.

On Pax/Combi versions there are four escape devices next to the exit. On the freighter there are eight. They are inertial reels. Go out the door and hold on. Like an E-ticket ride at Disney. The frighter also has six harnesses that you climb into and clip the devices to.
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jetmech
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RE: Cockpit Emergency Exit On The 744

Fri Dec 01, 2006 11:06 pm

Hey Legoguy / SK A340  Smile,

Yes, it is actually an emergency exit  blush ! Just below the bottom sill of that exit is a rack of inertia handles. Basically, what you do is grab one of these handles (IIRC there is 5 of them) climb through that hatch and jump down. The inertia handle is basically a handle with a long steel cable attached near the stowage rack. The handle has an inertia reel to control your rate of descent.

Airbus has a different method to escape the cockpit. On the A330 / A340, the side window opens inward and slides aft. Above this window is a stowage box with an escape rope. You basically throw the rope out the window and use it to climb down. IIRC, the 767 has a similar arrangement.

Regards, JetMech
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kbfispotter
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RE: Cockpit Emergency Exit On The 744

Fri Dec 01, 2006 11:49 pm

Quoting JetMech (Reply 3):
Airbus has a different method to escape the cockpit. On the A330 / A340, the side window opens inward and slides aft. Above this window is a stowage box with an escape rope. You basically throw the rope out the window and use it to climb down. IIRC, the 767 has a similar arrangement.

The 737 is the same way... Just above the flightdeck side window is a small compartment with an emergancy escape rope...

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legoguy
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 12:16 am

I never knew that. That's actually quite interesting! Is there any pictures about with these escape methods taking place? Such as a training event?

Also, do all 747 pilots have to practise escaping from this hatch before the become certified?

And lastly... do all 747's have this or is it only the later models?

Thanks
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miamiair
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 12:35 am

Quoting Legoguy (Reply 5):
And lastly... do all 747's have this or is it only the later models?

I believe the Classics had them a well. PhilSquares can probly give you better information. The info I posted above is for the -400 and -400F
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474218
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 12:49 am

The L-1011 has a similar flight station escape system, climb out through the escape hatch holding on to the handle and slid off the side of the fuselage. The inertia reel slows you down before you reach the ground.

The reason for this system is that neither the B747 and the L-1011 have flight station windows that can be opened. In my thirty plus years working on the L-1011 I never heard of the system being used. Tests during production were done with sand bags.

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[Edited 2006-12-01 16:55:41]
 
PhilSquares
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 3:47 am

Quoting Miamiair (Reply 6):
I believe the Classics had them a well. PhilSquares can probly give you better information. The info I posted above is for the -400 and -400F

It's on all the models. The pax version has 5 and the freighter has 8. In addition there is the passenger assist device (diaper) which can be used to lower someone through the cockpit escape hatch.

But, don't forget there is also at least one upper deck door with a slide on every aircraft. The escape reels are really only a "last resort".

They were used to evacuate the cockpit of a PA 747 in KHI that was hijacked.

Just an interesting bit of trivia, they can be reused up to 32 times and can be re-wound.
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jamesbuk
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 4:37 am

Quoting PhilSquares (Reply 8):
32 times

32 times each or all 5/8 can be used a total of 32 times?

Rgds --James--

P.S. Interesting topic!!!
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PhilSquares
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 5:02 am

Quoting Jamesbuk (Reply 9):
32 times each or all 5/8 can be used a total of 32 times?

Rgds --James--

P.S. Interesting topic

32 times each! The stainless steel tape in the inertia reels will do a job on your hands if you happen to touch it while you're sliding over the side....
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jamesbuk
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 5:11 am

Quoting PhilSquares (Reply 10):
32 times each!

Blooooody Hell!!

Quoting PhilSquares (Reply 10):
in the inertia reels will do a job on your hands

Lol i bet. Is it in a training program to use one of these?


Rgds --James--
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EMBQA
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 8:02 am

Quoting Legoguy (Reply 5):
And lastly... do all 747's have this or is it only the later models?

All commercial aircraft have that. There must be a secondary means of escape from the cockpit... either through a sliding/removable window, or an escape hatch.
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N766UA
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 8:50 am

The hatch on top is really for if the cockpit ends up on its side. Same on the CRJs and Saabs. If a window is blocked you can climb out the top hatch which, in that case, would be a side hatch.
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jetmech
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 9:04 am

Quoting 474218 (Reply 7):
sand bags.

Wow, they used real pilots to test the escape system  bigthumbsup  Big grin !
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EMBQA
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 10:36 am

Quoting N766UA (Reply 13):
The hatch on top is really for if the cockpit ends up on its side

The hatch on top is for aircraft that don't have side opening windows. Saab's and CRJ's do not have side opening windows. Embraer's do... hence, no roof hatch. DC-10/MD-11... side opening windows, no roof hatch. B747...no side opening windows, roof hatch... B707, B727, B737, B757, B767, B777... opening side windows, no roof hatch.

[Edited 2006-12-02 03:08:23]
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HAWK21M
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 11:43 pm

Any reason why the Exit was not thru Sliding Windows as on the B737.
regds
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Starlionblue
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RE: Cockpit Emergency Exit On The 744

Sat Dec 02, 2006 11:47 pm

Quoting HAWK21M (Reply 16):
Any reason why the Exit was not thru Sliding Windows as on the B737.

Slope of the fuse at that point? Something hindering an opening window mechanism?
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EMBQA
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RE: Cockpit Emergency Exit On The 744

Sun Dec 03, 2006 1:52 am

Quoting HAWK21M (Reply 16):
Any reason why the Exit was not thru Sliding Windows as on the B737.

The exit is through the sliding window. B737's do not have a roof hatch.. thus, they have a sliding window.
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jdl1527
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RE: Cockpit Emergency Exit On The 744

Sun Dec 03, 2006 11:30 am

The 787 will have a roof hatch
 
CF188A
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RE: Cockpit Emergency Exit On The 744

Mon Dec 04, 2006 11:25 am

lol as he climbs out .... he just slides down the front? Is that the original plan? (joking around) If so I would love to see the medical records of the engineers responsible for its design.  Wink
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HAWK21M
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RE: Cockpit Emergency Exit On The 744

Mon Dec 04, 2006 1:48 pm

Quoting EMBQA (Reply 18):
The exit is through the sliding window. B737's do not have a roof hatch.. thus, they have a sliding window

Are you saying the B747 sliding window exists.
regds
MEL
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PhilSquares
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RE: Cockpit Emergency Exit On The 744

Mon Dec 04, 2006 2:55 pm

Quoting HAWK21M (Reply 21):
Are you saying the B747 sliding window exists.

No 747 model has sliding side windows.
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HAWK21M
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RE: Cockpit Emergency Exit On The 744

Mon Dec 04, 2006 3:21 pm

Quoting HAWK21M (Reply 21):
Quoting EMBQA (Reply 18):
The exit is through the sliding window. B737's do not have a roof hatch.. thus, they have a sliding window



Quoting PhilSquares (Reply 22):
Quoting HAWK21M (Reply 21):
Are you saying the B747 sliding window exists.

No 747 model has sliding side windows.

Exactly what I thought.
regds
MEL
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jetmech
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RE: Cockpit Emergency Exit On The 744

Mon Dec 04, 2006 11:34 pm

Quoting Miamiair (Reply 2):
On the freighter there are eight. They are inertial reels.

G'day Techies, here they are. I apologise for the quality as the photos were taken without a flash. This is the rack of inertia reel escape handles on a B742 freighter. The handles were larger than I remembered, and it seems you could probably get both hands side by side on the handle. The red anodised "columns" are the actual handle, with the attached inertia reel mechanism behind.

Big version: Width: 768 Height: 1024 File size: 92kb
Rack of escape handle inertia reels. Above the handles is the cushion covering the escape hatch.


Quoting PhilSquares (Reply 8):
In addition there is the passenger assist device (diaper)

Big version: Width: 1024 Height: 768 File size: 191kb
Escape handle rack. The cables to each of the eight handles are bolted to the structure with a single bolt.


Does the diaper attach to the steel ring / plate fitting located in the middle of the red anodised handle?

Regards, JetMech
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CCA
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RE: Cockpit Emergency Exit On The 744

Tue Dec 05, 2006 2:04 am

Quoting JetMech (Reply 24):
Does the diaper attach to the steel ring / plate fitting located in the middle of the red anodised handle?

Yep sure does, there's a carribiner on the diaper.

CCA
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HAWK21M
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RE: Cockpit Emergency Exit On The 744

Tue Dec 05, 2006 5:54 pm

Quoting JetMech (Reply 24):

Very Similiar to the ones on the B752SF.However its located in the Supernumery Area ie outside the Cockpit.The question is do you have the time to wear the Diaper & link the reel if the Emergency is very critical.
regds
MEL
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