As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON GEAR DOWN SELECTION, NLG UNSAFE LIGHT ILLUMINATED, AIRCRAFT RETURNED TO DEPARTURE AIRPORT WITH GEAR SELECTED DOWN, TURNING ONTO FINAL NLG GEAR DOWN ILLUMINATED, AIRCRAFT LANDED NORMALLY. INVESTIGATION FOUND INTERMITTANT NLG GEAR UNSAFE WARNING CAUSED BY WIRING FAULT IN NLG DOWNLOCK SENSOR CABLE ASSY. CABLE ASSY REPLACED, GEAR FUNCTION CHECKED. AIRCRAFT RETURNED TO SERVICE.