As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT GEN OFF SHOW ON EOAP DURING THE FIGHT FROM MACAU TO SHANGHAI, AFTER LANDING LINE MAINTENANCE PERSONNEL REPORTED RT GEN BEARING FAIL WAS SHOWN ON EPCU AND HE CLAIMED THAT SERIOUS DAMAGE WAS FOUND ON VSCF GEN INCLUDING; EXTRUSION OF 3 ELECTRIC PLUGS BACKSHELLS, BROKEN PORTION OF DRIVE GEAR OF GEN WAS STUCK INTO THE ENGINE GEARBOX. AFTER REPLACED NR 4 BEARING SCAVENGE VALVE AND REPLACED CARBON SEAL ,THE A/C BACK NORMAL.