What was found
AIR TURNBACK WHEN APPLYING TAKEOFF POWER 1 OR 2 MINOR COMPRESSOR STALLS WERE FELT WITH ALL ENGINE INSTRUMENTS INDICATING NORMAL SO TAKEOFF WAS CONTINUED. AT ABOUT 12,000 FEET, NR 2 ENGINE HAD RAPID COMPRESSOR STALLS AND EGT WAS RED. SHUTDOWN ENGINE. BORESCOPE PER P AND W TROUBLESHOOTING CHART 72-50. FOUND EVIDENCE OF FOD DAMAGE AT NGV AND MOLTEN METAL AT PLATFORM OF HPT TURBINE. REMOVED AND REPLACED NR 2 ENGINE IAW CARD R5M71005, R5M78002, R5M76001. TRIMMED ENGINE IAW R5M71002. (M)