As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT GENERATOR EICAS MESSAGE ON CLIMBOUT. REMOVED AND REPLACED #1 ENGINE IDG IAW AMM 24-11-01. OPS CHECK NORMAL, LEAK CHECK GOOD. ETOPS GROUND VERIFICATION GOOD. NOTE: REMOVED UNIT TIMES BELOW ARE FOR NAC ONLY, PREVIOUS TIME ON WING UNKNOWN.