As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE ENGINE 100-HOUR INSPECTION, DAMAGE TO THE ENGINE TO TRANSMISSION DRIVE SHAFT WAS OBSERVED. THE DAMAGE WAS FULL CIRCUMFERENCE AND WAS CAUSED BY CONTACT WITH THE FIREWALL. THE SHAFT PASSES THROUGH TWO HALF FLANGE ASSEMBLIES. THE CLEARANCE BETWEEN THE HALF FLANGE ASSEMBLIES AND THE SHAFT IS NOT SYMMETRICAL AND RANGES FROM APPROXIMATELY .25 INCH TO .50 INCH.