As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3502 -ATB- DUE TO UNABLE TO PRESSURIZE CABIN. CORRECTIVE ACTION: REPLACED CPIOM PER A350 AMM 42-11 AND BOTH OCU'S PER A350 AMM 21-31. PERFORMED PRESSURE OPERATIONAL TEST, LEAK MEASUREMENT AND FUNCTIONAL TESTOF OVER PRESSURE RELIEF VALVE PER A350 AMM 21-31 REF ERA 594781-14. (7796359)