As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT TOP OF DESCENT, CARGO SMOKE LIGHT ILLUMINATED WITH MASTER CAUTION LIGHT. LIGHT WENT OUT IN LESS THAN 20 SECONDS. NO OTHER LIGHTS OR AURAL INDICATIONS. PERFORMED A VISUAL INSPECTION OF CARGO SMOKE DETECTORS AND PERFORMED TEST OF THE DETECTION SYS IAW AMM 26-16, NO FAULTS NOTED. ACFT OK FOR SERVICE.