As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE DETECTION BELL COMES ON INTERMITTENTLY ON ITS OWN, AND THEN WOULD NOT COME ON WHEN TESTED, VERIFIED. REMOVED AND RESEATED BELL CHIME CARD (M1000) IN P51 PANEL IAW B767 AMM 26-10-00 PERFORMED BITE PROCEDURE 26-16-00-10, NO PROBLEMS AT THIS TIME. FIRE WARNING SELF TESTED NORMAL AT THIS TIME. PER MAINT CONTROL DUE TO REPAIR HISTORY OF AURAL WARNING MODULE SERV NR 121, REPLACE MODULE PN 285T0385-5.