As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK/DECLARED EMERGENCY. LOST A-HYD QUANTITY PASSING THROUGH 20,000FT ON CLIMBOUT. FOLLOWED NORMAL FOM, QRH PROCEDURES. A-SYSTEM PUMPS TURNED OFF BEFORE QUANTITY DEPLETED. NO OTHER DISCREPANCY NOTED. FOUND A-SYSTEM ELEVATOR PCU LINE TO BE RUPTURED. REMOVED AND REPLACED LINE PER MM.