As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT DECK SMOKE DETECTOR ALERTING INTERMITTENTANTLY WITH NO INDICATION. CIDS1 CLASS 2 MESSAGE APPEARS WITH ALERTS. MAINTENANCE REPLACED THE NR 1 CIDS DIRECTOR AND ACCOMPLISHED A SATISFACTORY OPS CHECK IAW AMM 23-73-34.