I don't think the average person understands what flight deck means really, they probably would understand a sign with the word bathroom and a directional arrow underneath it though!
During the briefing, I always wonder if there could be a better design to fasten those O2 masks to one's head rather than those two pull cords.
During the briefing, I always wonder if there could be a better design to fasten those O2 masks to one's head rather than those two pull cords.