As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE RING TERMINAL ON THE OUTPUT TERMINAL OF THE ALTERNATOR BREAKS OFF, AFTER BREAKING THE TWO PARTS OF THE RING TERMINAL MAKE INTERMITTENT CONTACT; THIS INTERMITTENT CONTACT MAKES THE ALTERNATOR FAIL SWITCH (THAT IS MOUNTED INSIDE THE COCKPIT) OVERHEAT AND SHOOT OUT SPARKS AND SMOKE, THIS CONTINUES UNTIL THE AUX TERMINAL INLINE FUSE BLOWS. AN EMERGENCY WAS DECLARED, AIRCRAFT LANDED WITHOUT INCIDENT OR INJURY.