Originally Posted by Non-TypiCAL F/A

I am not going to claim to be an expert on the mechanisms on aircraft doors, but there are 2 mistakes in your post.

-The 777 door travels straight up a couple of inches, then out and forward. It does not move into the cabin. Here is a video of the door closing, but you can see what I am referring too:

http://www.youtube.com/watch?v=JUqn9bHWoyQ

-If moving the handle (the one on the inside) disengaged the girt bar then the slide would not blow. The only thing inside the cabin that disengages the girt bar is the Arm/Disarm lever or on the 737 actually moving the girt bar to/from the brackets. Also the 757, 767, and 777 when opened from the outside will automatically disarm before the door opens. This is why the agents always open the doors upon arrival with these aircraft.

Originally Posted by Non-TypiCAL F/A

Also, I just wanted to add that the 777 door has a "hole" in the door covered by a flap that is connected to the handle. The flap moves into the door when the door is opened, and when the plane is pressurized the flap will not move also preventing the handle from moving. You can see what I am referring to in these pictures:

http://www.airliners.net/photo/KLM--...-ER/1356122/L/

http://www.airliners.net/photo/Alita...-ER/0716367/L/