As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - L/H ENG FUEL LEAK FROM DRAIN MAST// C/O TSM TASK 71-00-00-810-914-A R71 LEAK FOUND TO ORIGINATE FROM THE AIR/OIL HEAT EX-CHANGER. REPLACEMENT OF AIR/OIL HEAT EX-CHANGER CARRIED OUT IAW A330 AMM 79-21-51-400-803 REV 72.00.