As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDED ORD UNDER AMBER ALERT DUE TO HYDRAULIC SYSTEM EICAS MESSAGE. LT HYD QTY INDICATION DROPPED TO 0.45 WITH ASSOCIATED REFILL AND LOW QTY ON EICAS. LT SYSTEM HYD PUMPS CURRENTLY TURNED "OFF" PER FLIGHT MANUAL TO CONSERVE REMAINING FLUID FOR APPROACH & LANDING. FLUID LEVEL STABLE AT 0.45 AT THIS TIME WITH PUMPS "OFF". REPLACED DAMAGED O-RING ON LT HYD ACMP REDUCER. FILLED RESERVOIR AND OPERATED LT HYD SYSTEM USERS.