As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A SCHEDULED 100/300 HR INSPECTION, THE OUTER DISC OF A 10 DISC PACK WAS DISCOVERED BROKEN THE EDGE RUB INDICATES THAT THE DISC HAS PROBABLY BEEN BROKEN FOR SOME TIME THE ACFT TT IS 9444.3. THE BROKEN PART IS UNKNOWN TIME IN SERVICE THE APPEARANCE IS THAT THE PART HAS NOT BEEN RECENTLY REMOVED, EVIDENT BY GREASE GRIME AND FRETTING BETWEEN THE DISKS.