As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED ALTERNATOR FAIL LIGHT CAME ON RETURNING TO HOME BASE. FOUND BRUSHES AND SPRINGS BROKEN. REMOVED END BEARING CAP AND FOUND BEARING WAS DESTROYED. THIS IS THE THIRD ALTERNATOR END BEARING FAILURE IN 3 MONTHS. THE OTHER TWO HAD 600 AND 700 HOURS S.O.H. FOUND THIS HAS BEEN A PROBLEM WITH THESE ALTERNATORS FOR SOME TIME. SUBMITTER PLANS TO INSPECT AND REPLACE BEARINGS AT 300 HOURS.