As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON APPROACH, SELECTING GEAR DOWN, EICAS MESSAGE "GEAR DISAGREE" SHOWING NLG NOT DOWN AND LOCKED. AFTER SEVERAL ATTEMPTS TO EXTEND THE NOSE LANDING GEAR, THE ALTERNATE LDG EXTENSION SYSTEM WAS USED. MAINTENANCE REPLACED THE NLG SELECTOR VALVE AND NLG PRIORITY VALVE. PRIORITY VALVE PNEUDRAULICS INC PN 4622 SN 1827A SELECTOR VALVE TACTAIR FLUID CONTROLS INC. PN 750006000 SN 2069.