As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON A ROUTINE INSPECTION, A 2 INCH CRACK WAS FOUND ON THE RT ENGINE FIREWALL COMING OUT FROM UNDER OUTBOARD LOWER MOUNT FLANGE. THE MOUNT BOLT APPEARED TO BE TORQUED CORRECTLY. WHILE DOING REPAIR TO FIREWALL, FOUND A CRACK IN ANGLE ON AFT SIDE OF FIREWALL. 70606-3 WAS INK-STAMPED ON THE ANGLE.