As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CUSTOMER REPORTED LARGE OIL LEAK. INSPECTED AND FOUND NR 2 STANDBY ALTERNATOR MOUNTING FLANGE CRACKED. .7500 OF THE FLANGE HAD COMPLETELY SEPARATED FROM THE ALTERNATOR. ONLY ONE MOUNTING STUD HELD THE ALTERNATOR ON THE ENGINE. CORRECTIVE ACTION WAS TO INSTALL A NEW ALTERNATOR.