As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A 50 HR INSP, THE ALTERNATOR CASE HALVES WERE FOUND LOOSE. THE THROUGH BOLT LOCKWIRE WAS STILL INTACT. ALTERNATOR TT SINCE O/H WAS 99.7 HRS. THE ALTERNATOR WAS REMOVED AND INSPECTED. NO FURTHER DEFECTS WERE FOUND. THROUGH BOLTS WERE RETIGHTENED AND SAFETIED. THEN THE ALTERNATOR WAS REINSTALLED.