As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3366 DURING THE PREFLIGHT CHECK FOUND THAT THE NR 2 BAGGAGE SMOKE DETECTOR WAS INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 2 CARGO COMPARTMENT SMOKE DETECTOR IAW AMM 26-15-01. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.