As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 3131 - ON APPROACH, NOSE GEAR GREEN LIGHT DID NOT ILLUMINATE DURING GEAR EXTENSION. THE GEAR WAS VERIFIED TO BE DOWN AND LOCKED. THE AIRCRAFT LANDED WITHOUT INCIDENT IN DTW. MAINTENANCE REPLACED BOTH NOSE GEAR DOWN LIGHT BULBS. SYSTEM OPERATED SATISFACTORILY. (X)