As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AS RECEIVED, THERE ARE MULTIPLE CRACK INDICATIONS FOUND ON THE DISC FIRTREE SERRATION LOCATION 61. SOME OF THE CRACKS ARE VISIBLE TO WHITE LIGHT INSPECTION. THE CRACKS APPEAR TO CROSS THE CORNERS AT SOME LOCATIONS. THIS IS A SIMILAR PROBLEM THAT WAS PREVIOUSLY REPORTED ON ANOTHER DISC UNDER FAA SDR KC1R20210112001. THE COMPONENT IS CURRENTLY IN SHOP FOR OVERHAUL AND IS ON HOLD AT THIS TIME. NOTE: ACTUAL TIME SINCE OVERHAUL IS UNKNOWN. TOTAL TIME ENTERED IN THIS BLOCK.