As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 9502 -ATB- THE CREW RETURNED THE AIRCRAFT TO PHL DUE TO MULTIPLE COMPRESSOR STALLS DURING CLIMB OUT. CORRECTIVE ACTION: INSPECTION PERFORMED BORESCOPE INSPECTION AND FOUND NUMEROUS HPC STAGE 1 BLADES DAMAGED. THE POWERPLANT WAS REPLACED. (LP #6930842)