As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - ECAM "ENG 1 AIR EXCHANGER FAULT".// TROUBLESHOT FAULT MESSAGE FOR FLIGHT REPORT PER A330 TSM 79-20-00-810-809-A. OPERATIONALLY CHECKED AIR EXCHANGER VALVE. NO FAULTS NOTED. VISUALLY CHECKED ALL CANNON PLUGS AND PINS ATTACHED TO AIR EXCHANGER. ALL CHECKS NORMAL. COULD NOT DUPLICATE FAULT. OK FOR SVC.