As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED FUSION ALERT, RETURNED TO DEPARTURE. ADVISED THE AIRCRAFT HYDRAULIC SYSTEM A FAILED. AN EMERGENCY WAS DECLARED, AND LANDED WITHOUT INCIDENT. AIRCRAFT WAS GROUNDED. FOUND A CLAMP AT SYSTEM THE A RETURN FILTER MODULE ASSY LOOSE. INSPECTED THE FILTER, NO METAL NOTED. REPLACED THE CLAMP IAW MM 29-11-61. LEAK CHECKED GOOD, NO DEFECTS NOTED.