What was found
(CAN) ENGINE 11348 HAD A COMMANDED IFSD AT 33,000 FT WHEN LEFT ENGINE SURGE IN FLT. ENGINE WAS SHUT DOWN AS IT CONTINUE TO SURGE. BOROSCOPE REVEALED SEVERE HPC DAM AGE FROM STAGE 2 TO STAGE 10, WITH BLADES HEAVILY DAMAGED AND MISSING. ENGINE ENROUTE FOR RRC, FURTHER REPORT WILL BE SUBMITTED UPON ENGINE DISASSEMBLY.