As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6348 - PSP-PHX - AFTER DEPARTURE FROM PSP, CREW REPORTED A CARGO BAY SMOKE DETECTOR ANNUNCIATOR ILLUMINATED IN FLIGHT. AIRCRAFT RETURNED TO THE FIELD. NO EVIDENCE OF FIRE OR SMOKE WAS NOTED. MAINTENANCE REPLACED THE SMOKE DETECTOR. AIRCRAFT WAS RETURNED TO SERVICE. (M)