As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO DTW, NOSE LANDING GEAR GREEN LIGHT DID NOT ILLUMINATE ON GEAR EXTENSION. RECYCLED GEAR AND NORMAL INDICATIONS WERE ACHIEVED. AIRCRAFT LANDED WITHOUT INCIDENT. CYCLED GEAR SEVERAL TIMES. ALL CHECKED NORMAL. PROBLEM COULD NOT BE DUPLICATED. AIRCRAFT RETURNED TO SERVICE.