As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3460 - DURING APPROACH TO DTW, THE GEAR WARNING HORN SOUNDED WHEN FLAPS WERE SELECTED TO FULL. AFTER EXECUTING A GO-AROUND, THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL PERFORMED SEVERAL FUNCTIONAL TESTS OF THE GEAR WARNING HORN SYSTEM BUT WERE UNABLE TO DUPLICATE THIS DISCREPANCY. (M)