As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENG N2 VIBES READING HIGH AT CRUISE DESCENT AND TAXI 3.2 TO 4.4. REPLACED LT ENG CRF ACCEL PER MM. RAN ENG PER PFHB. AT IDLE N2 VIBE RANGED FROM 1.6 TO 3.0 AT 95 PERCENT N1. N2 VIBES AT 2.2. REMOVED BORO TURNING PLUG AND PLUGS B3-2 AND B2-2. CLOSED COWLINGS. CHECKED MAIN ENG OIL CHIP DET, NO DEBRIS. C/W PBS4000 VIB SURVEY, FAN HI. BORESCOPED HRT CK/D OK. BORESCOPED HPC. FOUND 13 AND 14TH STAGE BLADES DAMAGED. REPLACED ENGINE.