As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH GEAR SELECTED TO DOWN POSITION, "NOSE GEAR DOWN' ANNUNCIATOR DID NOT ILLUMINATE. MISSED APPROACH, FOLLOWED CHECKLIST FOR MANUAL GEAR EXTENSION AND DECLARED AN EMERGENCY. LANDING WAS UNEVENTFUL. MAINTENANCE TROUBLESHOT TO A FAULTY NOSE LANDING GEAR DRAG BRACE DOWN LOCK SWITCH. GEAR SWINGS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.