What was found
STL - DURING CLIMB, SHUT DOWN NR 2 ENGINE DUE TO HIGH AVM AND N2 OVERSPEED. REPLACED NR 2 ENGINE. GROUND RUNUP AND OPERATIONS CHECKED NORMAL. S/D INVESTIGATION INTO THE SHUTDOWN OF ENGINE, S/N 4405, DUE TO HIGH AVM AND N2 OVERSPEED, REVEALED HIGH PRESSURE COMPRESSOR 5TH SHROUD RING, MFG P/N UL26735, HAD ANTI-FRET PADS LIBERATE FROM VANE SLOTS IMPACTING BLADES, CAUSING BLADE FRACTURES. ENGINE WAS REPAIRED AND RETURNED TO SERVICE. (M)