As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE COMPLYING WITH EMBRAER SB 505-22-0004 R3, THE SUBJECT CLUTCH RETAINING BOLT WAS FOUND TO BE SEVERELY CORRODED. THE PURPOSE OF THE SERVICE BULLETIN IS TO INSPECT AND REPLACE THIS BOLT BUT THE CORROSION FOUND ON THIS BOLT WAS THROUGH APPROXIMATELY 50% OF THE BOLT DIAMETER.