What was found
(CAN) DURING A GROUND RUN TO INVESTIGATE A REPORTED IN-FLIGHT VIBRATION, THE ENGINE SURGED AND WAS SHUTDOWN. INITIAL REPORT WAS A FAILED LOW PRESSURE (LP2) TURBINE BLADE, SINCE AMENDED TO A "DENTED" LP2 TURBINE BLADE. METAL SPLATTER WAS ALSO REPORTED IN THE TAILPIPE. ENGINE WAS SENT FOR R&O, STRIP REPORT TO FOLLOW.