As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE BELL FAILED TO RING DURING FIRE OVERHEAT TEST. SUPPLEMENTAL DATA UPDATE OTHER FIRE INDICATIONS NORMAL. REPLACE THE BELL-CHIME AURAL WARNING MODULE M1000. REPAIRED PUSH BACK PIN ON P51 M10 00 REF WDM31-51-21 PIN 10 AND 50 WERE SECURED IN D113. REPLACED M1000 CARD AND PWR SUPPLY MOD M616 PER MM. PERFORMED ALL TEST EICAS SYS, TO WARN , MC WARN, AURAL WARN AND LDG CONFIG CHKS. ALL TEST PASS.