As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DRIVEN ALTERNATOR, DRIVE END MAIN SHAFT BEARING RETAINER EARS TORN OFF ALLOWING EXCESSIVE MAIN SHAFT END PLAY IN EXCESS OF .100 . EXCESSIVE END PLAY OF SHAFT CAUSED ALTERNATOR DRIVE END BEARING TO BADLY GAUL THE ALTERNATOR CASE AND ALTERNATOR BRUSHES TO WANDER ON THE SLIP RINGS INTERMITTENTLY TRIPPING THE OVERVOLTAGE RELAY. ALTERNATOR WAS ON THE VERGE OF A CATASTOPHIC FAILURE WHEN REMOVED.