As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE (ABOUT 12,000 FEET), RT HYDRAULIC PRESSURE LOW MESSSAGE AND INDICATOR LIGHT ON FORWARD INSTRUMENT PANEL ILLUMINATED. BOTH RT HYDRAULIC PRESSURE AND QUANTITY READ ZERO. RETURNED TO ATLANTA. FOUND RT ENGINE HYDRAULIC RETURN FLEX LINE LEAKING AT FILTER MODULE. REPLACED LINE, BLED HYDRAULIC SYSTEM AND SERVICED. LEAK CHECK OK.