As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB - DUE TO ETOPS VERIICATION FLIGHT UNSATISFACTORY PLUS ISSUES WITH MULTIPLE ECAMS. PFR FAULT AIR PACK 2 REGUL FAULT ATA 21-61 CARRIED OUT TROUBLESHOOTING OF AIR PACK 2 IAW TSM 21-61-00-810-817-A. CARRIED OUT OPERATIONAL TEST OF PACK TEMP-CONTROL SYS IAW A321 AMM 21-61-00-710-001. P2 BY-PASS VALVE (30HH)FOUND FAULTY FOR REPLACEMENT. PERFORMED REPLACEMENT OF PACK 2 TURBINE BYPASS VALVE, IAW AMM 21-61-53-000-001-A AND 21-61-53-400-001-A. SYSTEM OPS CHECKS GOOD. OK TO CONTINUE.