A nacelle for a bypass turbojet engine having a secondary flow path, the nacelle exhibiting an open window between the secondary flow path and the outside of the nacelle and comprising a reverser system comprising doors in which each door is able to move between a stowed position in which the door closes off the window and a deployed position in which the door does not close off the window. For each door, at least one locking system is configured to lock the door in the stowed position, to unlock the door automatically when the door leaves its stowed position and to lock the door automatically when the door arrives in its stowed position.
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