As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRIP ID NR 1007151, THE CREW REPORTED THAT THE SMOKE DETECTOR LIGHT ILLUMINATED IN FLIGHT. THE LIGHT FLASHED THREE TIMES AND THEN EXTINGUISHED. MAINTENANCE REPLACED THE AFT BAGGAGE COMPARTMENT SMOKE DETECTOR. OPERATIONAL CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.