As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
98-0157 STA-DAY - MASTER FIRE WARNING LIGHTS AND BELL ANNUNCIATED WITH NO OTHER INDICATIONS. WARNING SYSTEMS CHECKED OK ON ENGINE, SMOKE, AND APU, NO FAULTS. 10,000 FEET 300 KTS. COULD NOT DUPLICATE ENGINE, APU AND SMOKE DETECTION SYSTEM CHECKS GOOD ON GROUND. CLEANED AND CHECKED CONNECTION AT R421 RECTIFIER AS PRECAUTION PER WIRING DIAGRAM MANUAL 49-41-01. NO HISTORY.