As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CATASTROPHIC BEARING FAILURE OF ALTERNATOR ON RIGHT ENGINE AFTER TAKEOFF. PILOT RETURNED TO AIRPORT WITHOUT COMMUNICATION RADIOS. ONLY ADF AND GPS WAS STILL WORKING. PILOT REPORTED SEEING SPARKS FROM THE ALTERNATOR AND INTERIOR LIGHT FLICKERED. RADIOS WENT OUT AND RETURNED TO AIRPORT WITH NO PROBLEM LANDING. SUBMITTER STATED THIS IS THE SECOND LIKE INCIDENT REPORTED ON ALT 9422 ALTERNATORS.