As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING INSPECTION OF THE ENGINE MOUNT FOUND CUT MARKS ON LOWER TRUSS MEMBERS OF THE MOUNT. AFTER SOME INVESTIGATION FOUND THAT THE CUTS WERE MADE BY COWL FLAPS OF RESPECTIVE ENGINES. NO EVIDENCE OF COWL FLAP MISRIGGING OR DAMAGE ON COWL FLAPS. THE WEAR MARKS FOUND WERE ABOUT 1/2 THE WALL THICKNESS OF TUBES. TUBES WERE REPAIRED IAW AC43-13 AND AIRCRAFT RETURNED TO SERVICE.