As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST RIGHT INTEGRATED DRIVE GENERATOR AND RECEIVED RIGHT EEC MESSAGE. RESET RIGHT EEC, BUT IT REMAINED IN ALTERNATE MODE. *S/D* REPLACED RIGHT INTEGRATED DRIVE GENERATOR, GENERATOR CONTROL UNIT AND GENERATOR CONTROL BREAKER. IDG AND GCU WERE SHOP TESTED AND IN GOOD WORKING CONDITION. THE FAILURE MOST LIKELY RESULTED IN A GCB MALFUNCTION.