System for locking a foldable wing tip on a wing end of an aircraft

A system for locking a foldable wing tip on a wing end of an aircraft, the system comprising:

• at least one engagement device,
• at least one locking device comprising a support, a latch element rotatably held in the support and a lock element movably held on the support,
• a latch drive device coupled with the latch element of the at least one locking device, wherein the latch drive device is configured to selective rotate the latch element at least to an open position, a closed position and a test position,
• a lock drive device coupled with the lock element of the at least one locking device and configured to selectively vary a distance of the lock element to the latch element between a neutral position and a locking position,
• wherein the support comprises a receiving space extending into an insertion opening designed for receiving the engagement device,
• wherein the rotatable latch element comprises a circumferential surface section that selectively covers the insertion opening in an open position and uncovers the insertion opening in a closed position of the latch element,
• wherein the rotatable latch element comprises at least one locking recess arranged on a circumferential path of motion for engaging with the lock element in the closed position of the latch element and the locking position of the lock element,
• wherein the rotatable latch element further comprises at least one protrusion on the circumferential path of motion, which acts as a stop for the lock element, and
• wherein the system further comprises a signaling device configured to indicate a correct function when the lock element rests on the at least one protrusion.