jb747
Enthusiast
- Joined
- Mar 9, 2010
- Posts
- 12,959
In this age of computers, electronics, and the like, why do cabin crew still use a knock on the door as a signal that it is OK to open the cabin door. You would have thought by now that there was some "electronic" system available?
Sometimes a non technical safety procedure is the best. The cabin crew, and the pilots, can tell if a door is armed. Nevertheless, the doors are almost always opened by the staff from the outside. The reason is that the door slides will only go off if the door is opened from the inside. Even with all of the warning systems that exist, doors are still occasionally opened when armed...this avoids the consequence of firing a slide down the aerobridge.