As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO PIT SMOKE WARNING ON FINAL. DISCHARGED AGENT 1 BOTTLE. ECAM WENT AWAY. FIRE DEPT ONSITE. TROULBESHOOTING PROCEDURES PERFORMED ON SMOKE DETECTION SYSTEM AND DISCOVERED SDCU CLASS II FAULT. REPLACED THE SDCU (10WQ) PCN:565-9019 PER AMM 26-17-34-401.