The present invention relates to a specially designed hinge mechanism, which makes it possible to construct an aircraft door that can be fitted in a fuselage so as to be displaceable and swivellable on the fuselage. Furthermore, the invention relates to an aircraft door comprising at least one such hinge mechanism designed in this way, to a fuselage with at least one aircraft door that is linked to at least one hinge mechanism, designed in this way, on the fuselage, as well as to the use of at least one hinge mechanism for installation of an aircraft door at a fuselage. The hinge mechanism comprises a first rocker arrangement that is linkable to the aircraft door and that is kinematically designed such that as a result of its activation the aircraft door is displaceable from its home position in the direction of the fuselage; and a second rocker arrangement that is linkable to the fuselage and is kinematically designed such that as a result of its activation the aircraft door can be swivelled out from the fuselage to a final position around a polar axis that is aligned perpendicular to the direction of displacement.