As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDED UNDER AMBER ALERT DUE TO A-SYSTEM HYDRAULIC QUANTITY LOW. FOUND NR 1 ENGINE HYDRAULIC PUMP OUTLET FITTING LOOSE. REPLACED O-RING ON FITTING AND TIGHTENED FITTING. CHECKED AND REPLACED CASE DRAIN AND PRESSURE FILTERS. RAN ENGINE NO LEAKS FOUND.