As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO DEPARTURE DUE TO RIGHT HYD SYSTEM QUANTITY LOSS. FOUND RIGHT ENGINE OTBD THRUST REVERSER LOWER ACTUATOR B-NUT LEAKING. REPLACED PACKING IN UNION IAW AMM 78-31. LEAK CHECKED GOOD. ALSO, REMOVED AND REPLACED RIGHT SYSTEM ACMP MANIFOLD AND EDP MANIFOLD FILTERS. NO DPI FOUND POPPED. MCC ADVISED. OK FOR SERVICE.