As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) DURING PERIODIC ENGINE INSPECTION, IT WAS DISCOVERED THAT THE BOLT (PN AN7-46A) SECURING THE ALTERNATOR TO THE ALTERNATOR MOUNT (PN 643935) WAS LOOSE AND HAD ELONGATED THE MOUNTING HOLES IN THE MOUNT AND ALTERNATOR. FURTHER INVESTIGATION REVEALED THAT THE NUT WAS MISSING.