As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, AT 3000 FT, THE MASTER WARNING "FIRE WARNING" AND RED LIGHTS ILLUMINATED ALONG WITH FIRE WARNING BELL SOUNDING. CREW COULD NOT CANCEL LIGHTS OR BELL BY PUSHING RED LIGHT OF THE BELL CUTOUT SWITCH. BELL SOUNDED UNTIL BATTERY WAS SWITCHED OFF AT THE GATE. MX REMOVED AND REPLACED THE FIRE AND OVERHEAT DETECTION MODULE IAW MM 26-10-01 AND 26-11-00. OPS CHECK GOOD. (K)