As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NLG INDICATED RED UNSAFE WHEN GEAR WAS EXTENDED, BUT THE COCKPIT INDICATOR PIN SHOWED DOWN AND LOCKED ON APPROACH TO EWR. A GO-AROUND WAS PERFORMED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A BROKEN WIRE ON NLG DOWNLOCK SENSOR. THE WIRE WAS SPLICED. A GEAR SWING WAS PERFORMED IAW MM 32-31-00 WITH OPERATION AND INDICATIONS CHECKING GOOD.