As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SDAC FAILURE, BOTH ECAMS, CFM 8-3-1-13. CAPT ECAM SAID "SYSTEM DATA NOT AVAIL" FO ECAM SAID "NO DISCRETE AVAIL". REMOVED AND REPLACED SYSTEM DATA ANALOG CONVERTER PER M/M 31-55-22-4. CHECKS GOOD AT THIS TIME. R&I FROM FACT PREMATURE REMOVAL/INSTALLATION OFF MFG 66501-005-1.