As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - COCKPIT TEMP DIFFICULT TO CONTROL WITH A FIXED TEMP SETTING,SUPPLY AIR VARIES FROM VERY COLD TO VERY HOT.// CLEANED FLIGHT DECK TEMP SENSOR AND LINE PER A330 AMM 21-63-17 PERFORMED SYSTEM TEST PER A330 AMM 21-63-00 OP CHECK NORMAL OK FOR SVC.