As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: #2 ENGINE EXPERIENCED A COMPRESSOR STALL IN FLIGHT, ENGINE WAS NOT SHUT DOWN AND THE ENGINE RETURNED TO NORMAL OPERATIONS. AT THE SAME TIME THE ENGINE PARAMETERS TRIGGERED AN URGENT AMR FROM PRAT AND WHITNEY FOR POSSIBLE RIGHT ENGINE HPC DISTRESS. **SUPPLEMENTAL REPORT FOR AALA202109308231: MAINTENANCE ACCOMPLISHED BORESCOPE INSPECTION AND FOUND DAMAGE TO 8 EACH 8TH STAGE HPC BLADES THAT WERE BEYOND LIMITS. REPLACED #2 ENGINE **(CLOSED)