As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING THE APPROACH, THE NLG FAILED TO EXTEND UPON GEAR DOWN SELECTION AND THE CREW RECEIVED A GEAR DISAGREE WARNING MESSAGE. THE GEAR SELECTOR WAS CYCLED SEVERAL TIMES WITHOUT SUCCESS. THE LANDING GEAR MANUAL RELEASE HANDLE WAS PULLED AND ALL 3 GEARS EXTENDED. THE ACFT LANDED WITHOUT FURTHER INCIDENT. THE NOSE LANDING GEAR SELECTOR VALVE, REF IPC 32-33-00-01-185B, WAS REPLACED, TESTED AND THE ACFT WAS RELEASED INTO SERVICE.