As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE LANGING GEAR GREEN DOWNLOCK LIGHT DID NOT ILLUMINATE ON GEAR EXTENSION. RED UNSAFE LIGHT WAS ALSO EXTINGUISHED. CREW VISUALLY CONFIRMED THROUGH PERISCOPE THAT GEAR WAS DOWN AND LOCKED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NOSE GEAR DOWNLOCK SWITCH. OPERATIONAL CHECK NORMAL ON GEAR SWING. AIRCRAFT RETURNED TO SERVICE.