B 777 door curiosity
Thread Starter
Joined: May 2002
Posts: 190
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From: still in bed
B 777 door curiosity
question:1
Above 80 Kt the doors are mechanicaly locked. Is the door handle that is locked or the door frame is?
question 2
In case of loss of the air data compiuters who tells the doors such speed value?
question 3
Why in most of the CX (B777) flight I have traveled recently the 9 volts battery that arm the pneumatic emergency opening system (doors) was not showing its charge by pushing the push button test light?
question 4
In the case of the opening of an "armed" door the pressure equalizing vents would have time to open before the pneumatic emergency opening system would activate?
thanks
Above 80 Kt the doors are mechanicaly locked. Is the door handle that is locked or the door frame is?
question 2
In case of loss of the air data compiuters who tells the doors such speed value?
question 3
Why in most of the CX (B777) flight I have traveled recently the 9 volts battery that arm the pneumatic emergency opening system (doors) was not showing its charge by pushing the push button test light?
question 4
In the case of the opening of an "armed" door the pressure equalizing vents would have time to open before the pneumatic emergency opening system would activate?
thanks
Joined: Mar 2007
Posts: 1,235
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From: USofA
I'll try for the first one
1) The handle it'self locks. You cannot rotate the handle to the open position above 80+ kts. It does open the vent panels however.
1) The handle it'self locks. You cannot rotate the handle to the open position above 80+ kts. It does open the vent panels however.
Last edited by Spooky 2; 5th August 2008 at 14:35. Reason: spelling
Joined: Apr 2005
Posts: 569
Likes: 0
From: Stockholm Sweden
If no signal the doors will be unlocked. They are a MEL item
There are two standards of batteries in the doors. One shines a light when you press the test button, the other kind flashes red all the time. The flashing red ones are quite new and the crews were snagging them when they were first installed, no-one told them.
There are two standards of batteries in the doors. One shines a light when you press the test button, the other kind flashes red all the time. The flashing red ones are quite new and the crews were snagging them when they were first installed, no-one told them.
