As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A ROUTINE FLIGHT THE PILOT NOTED A LOW VOLTAGE LIGHT FOLLOWED BY A DISCHARGE RESULTING IN A TOTAL LOSS OF POWER. MAINTENANCE DISCOVERED THE ALTERNATOR CASE HALF BOLTS SHEARED AS A RESULT OF AN INTERNAL BEARING FAILURE. MAINTENANCE REPLACED THE ALTERNATOR AND FUNCTION CHECK THE SYS SERVICEABLE.