Aircraft security door and method and apparatus for security door handling

A bridge crane for supporting an aircraft security door on an aircraft service stair, the bridge crane comprising:

• a frame supported by a plurality of posts;
• two first rail members coupled to the frame that extend in an X direction in a substantially parallel relationship, wherein ends of each of the first rail members are coupled to an end rail extending in a Y direction, which is substantially orthogonal to the X direction, each of the end rails being substantially parallel to each other;
• a trolley positioned on a trolley frame, the trolley frame is movable along the first rail members in the X direction and the trolley is movable in the Y direction;
• and
• a brake assembly for immobilizing the trolley frame relative to the first rail members and the end rails, the brake assembly including a locking bracket that is coupled to a sidewall of the trolley frame and a plurality of pins that selectively interact with the locking bracket.

A method for installing an aircraft security door onto an aircraft, the method comprising:

• transferring the aircraft security door to an aircraft service stair;
• supporting the aircraft security door by a bridge crane coupled to the aircraft service stair, wherein the bridge crane comprises:
• a frame supported by a plurality of posts;
• two first rail members coupled to the frame that extend in an X direction in a substantially parallel relationship, wherein first ends of each of the first rail members are coupled to a first end rail extending in a Y direction and second ends of each of the first rail members are coupled to a second end rail extending in the Y direction, the Y direction substantially orthogonal to the X direction, each of the first and second end rails being substantially parallel to each other;
• a trolley positioned on a trolley frame, the trolley frame is movable along the first rail members in the X direction and the trolley is movable in the Y direction;
• and
• a brake assembly for immobilizing the trolley frame relative to the first rail members and the first and second end rails, the brake assembly including a locking bracket that is coupled to a sidewall of the trolley frame and a plurality of pins that selectively interact with the locking bracket;
• positioning the aircraft service stair in proximity to a fuselage of the aircraft adjacent to an opening in the fuselage;
• positioning the aircraft security door relative to the opening using the bridge crane;
• and
• securing the aircraft security door to the opening.