As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING DESCENT, THE CENTER HYDRAULIC QUANTITY MESSAGE CAME ON THE EICAS WITH THE RESERVOIR LIGHT ON THE OVERHEAD PANEL. QUANTITY SHOWS .36 RF. HYDRAULIC PRESSURE STEADY AT 3080. MAINTENANCE REMOVED AND REPLACED R/H INBD AILERON PCA IAW AMM 27-11-20. SERVICED CENTER HYDRAULIC SYSTEM TO FULL IAW AMM 12-12-01. OPS AND LEAK CHECK OK.