As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A**DIVERTED** EMERGENCY DECLARED ** LANDED UNEVENTFULLY CRASH FIRE & RESCUE INSPECTED THE JET FOR FIRE, DAMAGE & SMOKE. THE FIRE CRASH TEAM RELEASED CREW TO RAMP**. MAIN DECK CARGO SMOKE DETECTION MID 2 LOOP A FAULT LIGHT DISPLAYED ON ECAM. SMOKE LIGHT WOULD NOT ILLUMINATE WITH LOOP A OFF.REPLACED MID UPPER CARGO SMOKE DET CTRL UNIT IAW AMM 26-19-34 PB 401.