As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STX FLT 576, ENROUTE STX - CLT. AFTER TAKE-OFF, THE AIRCRAFT GENERATED AN INTERMITTENT CARGO SMOKE MESSAGE. THE FLIGHT RETURNED TO FIELD IN STX AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED THE CARGO BAY. NO FAULTS WERE FOUND. THE CARGO SMOKE DETECTION SYSTEM WAS RESET. OPERATIONALLY CHECKS OK.