Filmed a ship steaming in Goose Bay at minus 26C in the open door , no fun. The video camera lasted 20 minutes then broke the tape transport gears ! That was an AStar with both right side doors off . Thankfully we were out of options .
If I had to rig anybody else in the door ( or front ) I teach one procedure always. If you’re faced with a water landing then assume you will end up inverted. Now on dry land close your eyes and find your release system. Activate it with eyes closed. Do this 3 times and you’re good to go. So far we’ve never needed it . . . touch wood.