As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - EICAS MSG 'L GEN DRIVE' DISPLAYED INTERMITTENTLY BELOW 15,000 FT IDG OUT/ RISE TEMPS WERE NORMAL55/11 DEGREES. REPLACED LT ENG IDG IAW AMM TASK 24-11-01-004-001 AND 24-11-01-404-34. NO HELP. T/S IAW WDM 24-11-11 FOUND PIN 6 OF CONNECTOR D10964 PUSHED BACK. RESEATED SAME. RAN LT ENG IDG OPS CKS GOOD DRIVE LIGHT REMAINS OUT. IDG CHKS GOOD IAW 24-11-00-715-005.