747-400 doors

[ZAGORFLY]

Can Anyone help with drawings of the doors?
there is a mechanical locking system that prevents the opening in flight?
thank you

[Muzzey]

Best not to ask questions like this, why would anyone NEED to know?

[BOAC]

there is a mechanical locking system that prevents the opening in flight - I believe the main doors are standard 'plug' doors. Check wiki/Google

[Manual Reversion]

Upper deck doors as I recall are locked...or at least the opening lever is. Lower deck plug type. (There is a weird and wonderful procedure for smoke removal that involves opening them in flight)

[TOWTEAMBASE]

Too much info !!!!

[Simplythebeast]

Why the interest in door mechanisms? You were asking similar questions about 777 door mechanism some time back?

[BOAC]

Some time back indeed. If you are worried about ZF being a closet terrorist I must observe that he is taking his time as he has been with us on PPrune for over 12 years. A true 'sleeper'?

[Simplythebeast]

Six years since his query about 777 doors......he's slept in! No, just interested in his interest in door mechanisms.

[peekay4]

From October:

http://www.pprune.org/questions/550331-smoke-evacuation.html

I guess some are just fascinated with doors.

[Arfur Dent]

ZF may not be a sleeper but I doubt the wisdom of posting all this here and now. ISIL are quite sophisticated and shouldn't be spoon fed by Jammed Stab who should erase his 2 posts IMHO. Be careful - the only people who need to understand that stuff are qualified 747-400 aircrew - not the general public.:=

[JammedStab]

While I doubt the posted info is of any use to the bad guys, to make the previous poster more comfortable, I will delete it. Too bad. It is mostly stuff not in the manuals.

[Arfur Dent]

Thanks JS. You wrote some interesting info that I'd never seen before so maybe it could be distributed through the Fleet Office.

[ZAGORFLY]

I m sorry to have generated such much suspicious !!!!!!
Let me re frase the question
Above which speed the mechanical interlock door Bar ( if any) automatically is inserted to prevent the total opening of the door in flight if necessary to evacuate the smoke if any ?
I read it somewhere 20 kts or I may have fabricate it into my ram memory....thank you BOAC for observing the facts..I appreciated and peacefully go back to sleep.

[ZAGORFLY]

forget about this.
this curiosity it is irrelevant

[Simplythebeast]

Sleep well.

[BOAC]

How does it go?

"Just because you are paranoid, doesn't mean they are NOT out to get you"

[NSEU]

Above which speed the mechanical interlock door Bar ( if any) automatically is inserted to prevent the total opening of the door in flight if necessary to evacuate the smoke if any ?
I read it somewhere 20 kts or I may have fabricate it into my ram memory.

It sounds like one of the wrong answers to a multiple choice exam :}

[torghabe]

AMM forever, gents!