Ahh. Well, in the case of the Alaska flight, it's a plug door and not used as an exit. It's pinned in place with large pin that has a bolt, a castle nut and cot

Ahh. Well, in the case of the Alaska flight, it's a plug door and not used as an exit. It's pinned in place with large pin that has a bolt, a castle nut and cotter pin which lock the pin.