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A dual function lavatory door and methods are presented. A hinged door panel comprises a doorway hinge coupled to a first side of a lavatory doorway of a lavatory. The doorway hinge positions the hinged door panel to couple to a first interior side-wall of the lavatory in a deployed position. An ext

A dual function lavatory door and methods are presented. A hinged door panel comprises a doorway hinge coupled to a first side of a lavatory doorway of a lavatory. The doorway hinge positions the hinged door panel to couple to a first interior side-wall of the lavatory in a deployed position. An extendable door panel is coupled to the hinged door panel by a vertical hinge and can couple to a second side of the lavatory doorway opposite to the first side. The extendable door panel folds along the vertical hinge into an interior space of the lavatory in the deployed position. An extension panel is coupled to the extendable door panel and extends from the extendable door panel to couple to a second interior side-wall of the lavatory opposite to the first interior side-wall in the deployed position.

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1. A dual function lavatory door comprising: a hinged door panel comprising a doorway hinge operable to couple to a first side of a lavatory doorway of a lavatory and to position the hinged door panel to couple to a first interior side-wall of the lavatory in a deployed position;an extendable door p

1. A dual function lavatory door comprising: a hinged door panel comprising a doorway hinge operable to couple to a first side of a lavatory doorway of a lavatory and to position the hinged door panel to couple to a first interior side-wall of the lavatory in a deployed position;an extendable door panel coupled to the hinged door panel by a vertical hinge, and operable to couple to a second side of the lavatory doorway opposite to the first side and to fold along the vertical hinge into an interior space of the lavatory in the deployed position; andan extension panel coupled to the extendable door panel and operable to extend from the extendable door panel to couple to a second interior side-wall of the lavatory opposite to the first interior side-wall in the deployed position. 2. The dual function lavatory door of claim 1, further comprising a spring loaded plunger operable to extend outwardly from the extendable door panel to lock the extendable door panel to the second interior side-wall. 3. The dual function lavatory door of claim 2, further comprising a lock receiver located on the second interior side-wall and operable to receive the spring loaded plunger. 4. The dual function lavatory door of claim 2, wherein the spring loaded plunger is located inside a pocket section of the extendable door panel. 5. The dual function lavatory door of claim 1, wherein the hinged door panel, the extendable door panel and the extension panel define a secondary space on a floor of the lavatory. 6. The dual function lavatory door of claim 5, wherein the secondary space facilitates seated row capacity increases in a cabin space. 7. The dual function lavatory door of claim 1, wherein the hinged door panel further comprises a magnetic keeper operable to hold the hinged door panel to the first interior side-wall in the deployed position. 8. The dual function lavatory door of claim 7, wherein the magnetic keeper is operable to magnetically couple to a sink of the first interior side-wall. 9. The dual function lavatory door of claim 1, further comprising instructional information readable on the extendable door panel when the dual function lavatory door is in the deployed position. 10. The dual function lavatory door of claim 1, further comprising an automatic activation mechanism operable to deploy the deployed position. 11. The dual function lavatory door of claim 1, wherein dual function lavatory door comprises at least two folding panels. 12. A method for deploying a dual function lavatory door, the method comprising: decoupling an extendable door panel from a slide track in response to an activation mechanism, the slide track operable to slide the extendable door panel to couple to a second side of a lavatory doorway opposite to a first side of the lavatory doorway;coupling a hinged door panel comprising a doorway hinge coupled to the first side of the lavatory doorway to a first interior side-wall of a lavatory in response to the activation mechanism;folding the extendable door panel along a vertical hinge coupled to the hinged door panel into an interior space of the lavatory in response to the activation mechanism; andextending an extension panel coupled to the extendable door panel from the extendable door panel to couple to a second interior side-wall of the lavatory opposite to the first interior side-wall in response to the activation mechanism. 13. The method of claim 12, further comprising coupling the hinged door panel to the first interior side-wall by coupling a magnetic keeper to the first interior side-wall, wherein the hinged door panel comprises the magnetic keeper. 14. The method of claim 12, further comprising: extending a spring loaded plunger outwardly from the extendable door panel; andlocking the extension panel onto the second interior side-wall using the spring loaded plunger. 15. The method of claim 12, wherein the activation mechanism comprises one of: a manual activation mechanism, and an automatic activation mechanism. 16. A method for configuring a dual function lavatory door for an aircraft lavatory, the method comprising: coupling a hinged door panel to a first side of a lavatory doorway of a lavatory via a doorway hinge;configuring the doorway hinge to position the hinged door panel to couple to a first interior side-wall of the lavatory in a deployed position;coupling an extendable door panel to the hinged door panel via a vertical hinge;configuring the extendable door panel to couple to a second side of the lavatory doorway opposite to the first side, and to fold along the vertical hinge into an interior space of the lavatory in the deployed position;coupling an extension panel to the extendable door panel; andconfiguring the extension panel to extend from the extendable door panel to couple to a second interior side-wall of the lavatory opposite to the first interior side-wall in the deployed position. 17. The method of claim 16, further comprising increasing a seated row capacity in a cabin space due to a secondary space defined by the hinged door panel, the extendable door panel and the extension panel on a floor of the lavatory. 18. The method of claim 16, further comprising configuring one of: an automatic activation mechanism and a manual activation mechanism to deploy the dual function lavatory door in the deployed position. 19. The method of claim 16, further comprising: configuring a spring loaded plunger to extend the extension panel outwardly from the extendable door panel in the deployed position; andconfiguring the spring loaded plunger to lock the extension panel onto the second interior side-wall in the deployed position. 20. The method of claim 19, further comprising configuring the spring loaded plunger inside a pocket section of the extendable door panel.