Which instruction best describes the hinge orientation of doors 3L/R on the 767?

Which instruction best describes the hinge orientation of doors 3L/R on the 767?

• A. Doors hinged on bottom so they fall out and down
• B. Doors hinged on top so they swing up
• C. Doors hinged on side so they swing sideways
• D. Doors hinged in the middle

Answer: (A)

Doors at the rear of the 767 (3L and 3R) are designed with hinges on the bottom edge. That means when they’re opened, gravity makes the door rotate outward and downward away from the fuselage. This ensures the door clears the tail area and provides a straight, unobstructed path to the ground for evacuation. The bottom hinge also works with the slide/raft deployment, keeping the exit clear of structure as the door opens. Other hinge orientations would risk hitting the fuselage or tail or not offering a low, easy escape path from that location.

Doors at the rear of the 767 (3L and 3R) are designed with hinges on the bottom edge. That means when they’re opened, gravity makes the door rotate outward and downward away from the fuselage. This ensures the door clears the tail area and provides a straight, unobstructed path to the ground for evacuation. The bottom hinge also works with the slide/raft deployment, keeping the exit clear of structure as the door opens. Other hinge orientations would risk hitting the fuselage or tail or not offering a low, easy escape path from that location.