As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FLT LEVEL 39,000 AND CHOPPY/MODERATE TURBULENCE, FIRE BELL SOUNDED WITH NO ACCOMPANYING LIGHTS OR ABNORMAL INDICATIONS. IT OCCURRED APPROX 10 TIMES. WE SILENCED EACH TIME. DID NOT RECUR AFTER SMOOTHERD OUT. TEST OK ON PRE AND POST FLIGHT. REMOVED AND REPLACED FIRE OVERHEAT DETECTOR MODULE, OPS CHECK GOOD PER MM CHP 26. (M)