As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - AIR PACK 1 REG FAULT PACK 1 IN BYPASS MODE ECAM APPEARED AT THE GATE WITH ENGINES SHUTDOWN. PERFORMED REMOVAL OF FLOW CONTROL VALVE IAW AMM 21-51-51-000-801-A C/B PULLED AND COLLARED F02 K04 R08 R07 T08 A67 MN 024554. INSTALLED FLOW CONTROL VALVE PER AMM 21--51-51-400-801-A. RESET C/B'S F02 K04 R08 R07 T08 A67. OPS AND LEAK CHECK GOOD. A/C OK FOR SVC.