As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW REPORTED THE N. DOOR ADVISORY LIGHT REMAIN ON AFTER GEAR RETRACTION. CREW ELECTED TO CONTINUE THE SHORT FLIGHT. PERFORMED AN ALTERNATE EXTENSION FOR LANDING. MX FOUND NGDRCL UNREASONABLE FAR FAULT. THE FAULT WAS DUPLICATED ON JACKS AND THE NG DOORS CLOSED AFTER TAPPING ON THE SOLENOID SEQUENCE VALVE. THE SSV WAS REPLACED AND ACFT RETURNED TO SERVICE.