As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FINAL INTO BKW-PILOT REPORTED DURING GEAR EXTENSION, DID NOT GET GREEN LIGHT INDICATION FOR NOSE GEAR DOWN AND LOCKED. CREW RETRACTED GEAR AND PERFORMED A MANUAL EXTENSION IAW WITH CHECKLIST, STILL NO LIGHT FOR NOSE GEAR. CREW DECLARED IN FLIGHT EMERGENCY (IFE). AIRCRAFT LANDING AT BKW WAS UNEVENTFUL. AIRCRAFT WAS ISSUED SFP TO HEF. MX FOUND A FAULTY NOSE LANDING GEAR DOWNLOCK POSITION SWITCH. REMOVED AND REPLACED SWITCH IAW AMM, OP'S CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.