As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1585 - PHL-MCO - RTF - AFTER T/O EXPERIENCED LOSS OF FLUID IN 'G' HYDRAULIC SYSTEM FOLLOWED BY SYSTEM LOSS. THE CREW DECLARED AN EMERGENCY, RETURNED TO PHL AND AIRCRAFT WAS TOWED TO THE GATE. MAINTENANCE REPLACED RT MLG DOOR ACTUATOR FLEX LINE AND NR 1 ENGINE HYDRAULIC PUMP. OPERATIONAL CHECK GOOD. INSPECTION OF 'G' SYSTEM FILTERS REVEALED NO CONTAMINATION.