As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SMALL SNAP RING IN THE HYDRAULIC PULLEY CAME DISLODGED DURING FLIGHT, CAUSING THE PULLEY TO DISCONNECT FROM THE PUMP. ON FURTHER INSPECTION THE PULLEY ASSEMBLY HAD SOME PITTING CORROSION WHERE THE BEARING MATES WITH THE PULLEY, ZONE B IN MM.