As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A ATB - CABIN SMOKE DETECTOR WARNING WAS INTERMITTENT AFTER LEVEL OFF. NO SMOKE INDICATION VISUALLY NOTED. INDICATION DID NOT OCCUR DURING LAST HALF HOUR OF FLIGHT. BRIEF WITH FLT CREW - NR 1 SMOKE DETECTOR MAIN DECK WARNING INTERMITTENT. NR 1 SMOKE DETECTOR REPLACED PER MM 26-15-01, TEST OK.