As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. EMER DECLARED, LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT. DURING CRUISE RECEIVED CTR HYD QTY EICAS MSG WITH QTY INDICATION OF .45 RF. ALL CTR PUMPS TURNED OFF. NO FURTHER QTY LOSS. ALL CTR PUMPS BACK ON FOR APPROACH. QTY AT GATE .31 RF. R & R HYD LINE, BETWEEN C1 HYD PUMP & FILLER HOUSING IAW AMM 20-10-00 & SERVICED HYDS IAW AMM 12-12-01. LEAK & OPERATIONAL CHECKED NORMAL.