As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN REPORTED LOSS OF GREEN HYDRAULIC SYSTEM AT TOP OF CLIMB AND PTU WAS INTERMITTENT. DECLARED AN EMERGENCY, RETURNED AND AIRCRAFT TOWED TO GATE. MAINTENANCE FOUND BURST HYDRAULIC HOSE - REMOVED AND REPLACED HOSE ASSEMBLY AND SERVICED HYDRAULIC SYSTEMS.