Aircraft door locking system comprising a monitoring system signaling whether the locking system is in a locked or unlocked state

A locking system for locking a door in a closed position with respect to a carrier, the locking system comprising at least two locks each capable of immobilizing the door in the closed position, the locking system having a signaling system,

• wherein the signaling system includes one position sensor per lock, each position sensor emitting a measurement signal bearing a locked state or an unlocked state of the associated lock, the signaling system comprising a controller receiving the measurement signals and connected to an alerter, the controller being configured to emit either an unlocking signal when at least one measurement signal bears an unlocked state of the associated lock or a locking signal if each measurement signal bears a locked state of the associated lock, the alerter generating a visual unlocking alert following receipt of the unlocking signal and a visual locking alert following receipt of the locking signal, the locking alert being different from the unlocking alert.