[linMcHlp]

Explanation of the Boeing 737 -900 MAX emergency exit door. It is a “plug” -type but dynamic. The door hinges downward on the outside of the aircraft:

https://www.youtube.com/watch?v=nw4eQGAmXQ0

[EVO X]

Thanks for the link. Wow, just 4 bolts secure the outward opening door plug in place.