As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED ON TOP OF DESCENT NR 2 ENG LP VIBRATION WAS INDICATING 4.0 UNITS. THE REST OF THE ENGINE PARAMETERS WERE INDICATING NORMALLY. ON THE GROUND DURING VISUAL INSP THE LAST STAGE TURBINE FOUND SEVERALLY DAMAGED. FOD COULD BE THE CAUSE OF THE ENGINE DAMAGE AND HIGH VIBRATION. ENGINE WAS RECEIVED NEW WITH THE DELIVERY OF THE ACFT ON 2007-12-02 AND HAD 3844 CYCLES AND 8440 HOURS SINCE THEN.