Abstract: The invention relates to a lock which is intended to be disposed in a thrust reverser and which comprises a bolt and a linking member having a control lever connected thereto. The invention is characterized in that the control lever is equipped with a slot comprising a coupling section, a throttling section and an end section. The invention is further characterized in that a locking pin, which can move against a spring, is equipped with a constriction having a smaller cross-section than that of the throttling section of the slot. In this way, when the constriction is positioned in line with the slot after the locking pin has moved, the control lever can move alternately from a locking position, in which the locking pin is trapped by the end section, to an open position, in which the slot is disengaged from the locking pin.