As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED NR 4 ENGINE DRIVEN GENERATOR OUT, LIGHT ILLUMINATED AND WOULD NOT RESET, FIELD TRIPPED OFF. ACFT COMPLETED THE FLIGHT. GENERATOR WAS FOUND OVERHEATED AND THE WINDINGS PUSHED INTO THE COOLING SCREEN. DRIVE SHAFT WAS FOUND SHEARED WHEN THE GENERATOR WAS REMOVED. A REPLACEMENT GENERATOR WAS INSTALLED AND GROUND RUN CARRIED OUT.