As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RIGHT GENERATOR TRIPPED OFF, ATTEMPTED RESET PER FLIGHT MANUAL PROCEDURES. GENERATOR WOULD NOT RESET. CREW STARTED APU, PLACE APU GENERATOR ONLINE. ELEC GENERATOR SYSTEM RIGHT EICAS MESSAGE DISPLAYED. REPLACED RIGHT ENGINE IDG AS PER AMM, OPS AND LEAK CHECK OKAY. RUN RT ENGINE PER JRH, ALL PARAMETERS OKAY.