As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DECK CARGO SMOKE ECAM PASSING 32K LEVELED OFF COMPLIED WITH ECAM. ATB DESCENDING THROUGH 20K RECALLED ECAM ALL RED ECAM CLEARED CONTINUED MEM NORMAL APP LANDING FIRE RESCUE CONFIRMED NO SMOKE. EMERGENCY DECLARED. REMOVED AND REPLACED SMOKE DETECTION CONTROL UNIT 50WU1 REF AMM: 26-19-34-04, OPS CHECK GOOD. THESE ACTIONS DID NOT REPAIR DISCREPANCY. REPEATED WRI 21-20/7802.