As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PHYSICAL VIBRATION REPORTED AT 35 PERCENT N1, 70 PERCENT N2, AND FELT IN THE COCKPIT. GATE RETURN TRIM BALANCE REDUCED N1 EMV FROM 2.2 TO 1.2 BUT DID NOT FIX COCKPIT VIBRATION. MCD FOUND CLEAN. BOROSCOPE INSPECTION REVEAL LP 1 TURBINE BLADE FAILURE. ENGINE AT RRC FOR REPAIR, FAILED BLADE WILL BE RETURNED TO RRD FOR INVESTIGATION.