As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD DUE TO NR 1 ENGINE COMPRESSOR STALL AND SUBSEQUENT SHUTDOWN. REPLACED ENGINE. DISASSEMBLY OF REMOVED ENGINE REVEALED FRACTURED 3RD STAGE BLADE AS ROOT CAUSE. FURTHER ANALYSIS OF BLADE FRACTURE AREA REVEALED BIRD DEBRIS AS MOST LIKELY SOURCE OF FRACTURE INITIATION. BIRD REMAINS WILL BE SENT TO THE SMITHSONIAN FOR SPECIES IDENTIFICATION, AND DATA ENTERED INTO INDUSTRY FOD DATABASE.