As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO DEPARTURE, CREW CALL, RIGHT FCV MSG DISPLAYED ON EICAS. ACCOMPLISHED MAT TEST 2X FAILED 2X. LOCKED OUT RIGHT LOWER FLOW CONTROL VALVE PER MEL. RIGHT LWR FLOW CONTROL VALVE LOCKED CLOSED. REPLACED LOWER FCV-RIGHT PACK. FOUND AND REPAIRED BROKEN GROUND WIRE AT CONNECTOR TO UPPER SOLENOID. RAN FIM 21-51 TASK 818. CHECKED NORMAL.