As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT GENERATOR FAILED. RETURNED TO DEN. *S/D* REPLACED RIGHT INTEGRATED DRIVE GENERATOR (P/N 729825 DASH 770), AIR-OIL HEAT EXCHANGER AND FUEL-OIL COOLER. RIGHT INTEGRATED DRIVE GENERATOR DIFFERENTIAL FAILED DUE TO CONTAMINATION. UNIT WAS CONTAMINATED WITH MINERAL OIL.