As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, PILOT NOTICED A LOUD BANGING NOISE FROM UNDER ENGINE COWLING PILOT PROCEEDED TO LAND. AFTER LANDING, MAINTENANCE DEPARTMENT. REMOVED COWLING TO FIND THIS ALTERNATOR SEPARATION/ FAILURE. NO OTHER COMPONENTS WERE DAMAGED. INSPECTION PRIOR TO THIS FAILURE SHOWED NO DEFECT TO THIS COMPONENT. (K)