As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#353, YHZ-DUB. (ETOPS) "MX AIR BLEED STATUS MSG ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY 1) FAULT(S) INDICATED BY AIR BLEED ); PERFORMED GROUND SCANNING AND BITE TEST PER AMM 36-11-00. NO FAULTS NOTED. CAN NOT DUPLICATE FAULT. MX-4 UPDATED. PLACARD REMOVED.