As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE 3 WIRES COMING FROM THE STATOR ARE SHORTED OUT ON THE CASE. THIS IS 4TH ALTERNATOR OVERHAUL BY FACILITY WITH THE SAME FAILURE, ALL 4 ALTERNATORS HAD LESS THAN 390 HOURS SINCE OVERHAUL. THERE NEED TO BE MORE INSULATION ON THE 3 WIRES.