As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK, IN-FLIGHT ENG SHUT DOWN, DECLARED EMERGENCY. DURING CLIMB NR 1 ENG ENCOUNTERED 3 COMPRESSOR STALLS WITH-IN 3 MINUTES. AFTER RETURNING TO OAK FOUND PIECES OF METAL INSIDE NR 1 ENG TAIL PIPE. REMOVED AND REPLACED NR 1 ENG PER MM.