As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#778, LAS-BOS. (ETOPS) 'APU AIR BLEED FAULT UPON APPLYING APU BLEED AIR ( 36-00-00-C CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY FAULT(S) INDICATED BY AIR BLEED ); NO CFDS RESPONCE FROM BMC 1. PER AMM 36-11-34 REPLACED BMC 1.ER GROUND VERIFICATION PASSED. MDDR CLEARED. MX-4 UPDATED, PLACARD REMOVED.'