Device for raising and lowering the passenger door of an aircraft

A device for securing a mechanism for raising a passenger door of an aircraft in a raised state, the mechanism having a supporting arm connected movably to a fuselage frame of the aircraft;

• a wishbone connecting the supporting arm to the passenger door;
• a first journal rotatably connecting the wishbone to the supporting arm;
• and a lifting mechanism having a lifting shaft for raising and lowering the door, the lifting shaft including two ends and a roller lever disposed at each end, wherein when the passage door is in the closed position, each roller lever engages a fuselage frame mounting, a lowering safety shaft engaged with the lifting shaft, the lowering safety shaft including an end, a roller lever disposed at the end of the lowering safety shaft, and a roller mounted to the roller lever, and a controllable drive engaged with the lowering safety shaft to rotate the lowering safety shaft;
• the device comprising:
• a lowering safety link including an second journal having an elongated configuration, the second journal having a link track, the roller of the lowering safety shaft being guided on the link track of the second journal.