Dual purpose lavatory barrier

An aircraft cabin lavatory monument comprising:

• a dual purpose aircraft cabin lavatory door movably attached to an aircraft cabin lavatory frame, said dual purpose aircraft cabin lavatory door comprising:
• a movable aircraft lavatory door first side;
• a movable aircraft lavatory door second side;
• a through opening region extending through a door thickness of the dual purpose aircraft lavatory door, said door thickness extending from the movable aircraft lavatory door first side to the movable aircraft lavatory door second side;
• a transparent window configured to occupy the through opening region;
• a sliding panel frame in communication with the movable aircraft lavatory door first side, said sliding panel frame configured to house a sliding panel, said sliding panel configured to move between a sliding panel open position and a sliding panel closed position;
• wherein in the sliding panel open position the through opening region permits viewing access of location aft of an aircraft cabin barrier from within the aircraft cabin barrier;
• wherein in a closed position in a first lavatory door mode, said dual purpose aircraft cabin lavatory door is configured to completely enclose an aircraft cabin lavatory monument footprint;
• wherein in a closed position in a second lavatory door mode, said dual purpose aircraft cabin lavatory door is configured to engage an aircraft cabin second monument multi-section panel to form an aircraft cabin secondary barrier;
• and
• wherein said aircraft cabin secondary barrier is configured to control movement of passengers along an aisle within an aircraft cabin area.

A method of controlling movement of passengers along an aisle within an aircraft cabin area, the method comprising:

• prior to opening a flight deck door, establishing an aircraft cabin secondary barrier into an aircraft cabin secondary barrier deployed position with a flight deck being on a first side of the aircraft cabin secondary barrier, and with a passenger section of a cabin area being on a second side of the aircraft cabin secondary barrier, the aircraft cabin secondary barrier comprising;
• an aircraft cabin lavatory monument, said aircraft cabin lavatory monument comprising an aircraft cabin lavatory component, said aircraft cabin lavatory component comprising at least one of a movable aircraft lavatory door and an aircraft lavatory wall;
• an aircraft cabin second monument, said aircraft cabin second monument positioned a selected distance from and across an aircraft cabin aisle from the aircraft cabin lavatory monument, said aircraft cabin second monument comprising a second monument component, said second monument component comprising an aircraft cabin second monument wall, said second monument component further comprising a movable aircraft cabin second monument multi-section panel hingedly attached to the aircraft cabin second monument wall, said second monument multi-section panel configured to releasably engage the aircraft cabin lavatory component;
• locking the aircraft cabin secondary barrier in a closed position;
• after locking the aircraft cabin secondary barrier, opening the flight deck door and providing access to flight personnel to a front section of the cabin area, said front section of the cabin area located at the first side of the aircraft cabin secondary barrier;
• and
• after providing access to the front section of the cabin area to the flight personnel, reclosing the flight deck door.