As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUR HOURS INTO FLIGHT, LEFT GENERATOR FAILED. REPLACED LEFT GCU PER MM. REPLACEMENT TEST PASSED MESSAGE CLEARED. LEFT GEN SYS STILL INOPERATIVE ON ENGINE RUN MESSAGE AND NO VOLT OUTPUT. REPLACED LEFT IDDG PER MM. LEAK AND GEN SYS OPS TEST OK.