As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 1351 - AFTER TAKEOFF IAD AND LANDING GEAR RETRACTED, RED NLG LIGHT ILLUMINATED FOR APPROXIMATELY 1 MINUTE AND THEN EXTINGUISHED WITH NO OTHER ABNORMAL INDICATIONS. AIRCRAFT PROCEEDED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED NLG UPLOCK SENSOR. SYSTEM GROUND CHECKED, NORMAL OPERATION.