As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MASTER WARNING (SMOKE) LIGHT IN FLIGHT. MAINTENANCE INSPECTED CARGO COMPARTMENT, NO EVIDENCE OF SMOKE OR SMOKE DAMAGE NOTED. REPLACED NR 1 AND NR 2 SMOKE DETECTORS, P/N 473054, S/N 1764, TSN 1681.4, CSN 12543. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.