Latch pin assembly for folding wing tip system

A locking assembly for a latch pin assembly having a piston with a piston head, a latch pin enclosing the piston head and defining an inner chamber, the piston head separating the inner chamber into an extend chamber and a retract chamber, the latch pin including a latch surface, a latching hydraulic line fluidly communicating between the extend chamber and a hydraulic fluid source, and an unlatching hydraulic line fluidly communicating between the retract chamber and the hydraulic fluid source, the locking assembly comprising:

• a first lock including:
• a lock cam movable between a lock position, in which the lock cam engages the latch surface of the latch pin, and an unlock position, in which the lock cam is disengaged from the latch surface of the latch pin;
• and
• a first lock actuator mechanically coupled to the lock cam and configured to provide a bias force pushing the lock cam toward the lock position;
• and
• a second lock including:
• a hydraulic lock disposed in the latching hydraulic line and having an initial state, in which fluid flow is blocked from exiting the extend chamber through the latching hydraulic line, and an open state, in which fluid flow is permitted from the extend chamber through the latching hydraulic line is permitted.