What was found
AS RECEIVED, THERE ARE MULTIPLE CRACK INDICATIONS FOUND ON THE SERRATION LOCATION 61. THE CRACK INDICATIONS ARE FOUND AT 35 SERRATION LOCATIONS. THE CRACKS APPEAR TO CROSS CORNERS AT SOME LOCATIONS. NO CRACKS ARE PERMITTED PER INSPECTION/CHECK-05.AD 2012-02-11 EXISTS FOR THE EQUIVALENT COMPONENT IN THE ROLLS-ROYCE RB211-535E4 ENGINE MODEL. THIS CONDITION WAS ALSO RECENTLY REPORTED FOR THREE OTHER DISKS, SAME PART NUMBER AND OPERATOR, UNDER FAA SDR #KC1R20210112001, FAA SDR #KC1R20210326001, EASA REPORT OR- 0000000000003614, FAA SDR #KC1R20210622001, AND EASA REPORT OR-0000000000008085.