There is an 8 pounds per square inch difference between the inside and outside of the cabin.
If the door is 3 feet by 6 feet, it has an area of 2592 square inches.
Thats a force of 20,736 pounds, or over 10 tons, on the door.
The door handle would break before you’d be able to open the door.
Hey! I guess I should have read further down-thread before my reply...
Excellent facts.