As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DCA - FL233 - DURING APPROACH THE NOSE GEAR GREEN LIGHT DID NOT ILLUMINATE. AFTER CYCLING THE GEAR THE GREEN LIGHT CAME ON. MAINTENANCE REPLACED THE UPPER AND LOWER NLG INDICATIONS SWITCHES AND SWUNG THE NOSE GEAR. ALL OPERATION WAS NORMAL. (M)