As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1578, LAS-BOS. (ETOPS) "(CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY 1) FAULT(S) INDICATED BY AIR BLEED ); (RESOLVED ON W/O: 1446134 TASKCARD: NR-00001) PERFORMED BMC 1 & 2 BITE TEST IAW AMM 36-11-00. OPS CHK GOOD NO ACTIVE FAULT MDDR CLEARED, PLACARD REMOVED & MX4 UPDATED.