As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 3 MAIN DECK CARGO SMOKE DETECTOR ILLUMINATED ALONG WITH THE FIRE BELL. AFTER CHECKING MAIN DECK, THERE WAS NO SIGN OF SMOKE. MAINTENANCE REMOVED AND REPLACED SMOKE DETECTOR AMPLIFIER. OPERATIONAL CHECKED GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (A)