As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT 2216. NUMEROUS MOMENTARY MASTER WARNING SMOKE ILLUMINATIONS DURING FLIGHT. ASSOCIATED AFT BAGGAGE SMOKE LIGHT ALSO ILLUMINATED. THE ILLUMINATION OF THESE LIGHTS WAS FOR ABOUT 1 SECOND. NO SMOKE DETECTED IN THE CABIN. MX REPLACED BOTH AFT CARGO COMPARTMENT SMOKE DETECTORS. CHECKS GOOD. ACFT RETURNED TO SERVICE.