As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CRACK AND CORROSION ON PN 2641029-1. THIS PART IS TITLED IN THE IPC AS "COULING MOUNT" BUT ATTACHES THE UPPER ENGINE MOUNT TRUSS TO THE FIREWALL. UPON REMOVAL OF THE PART IT WAS DISCOVERED THAT THERE WAS A SECOND CRACK AROUND THE ENGINE MOUNT BOLT HOLE. CORROSION WAS FOUND ON THE BACK SIDE OF THE PART WHICH WAS NOT ABLE TO BE SEEN PRIOR TO REMOVAL OF THE PART.