As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. AIR INTERRUPT, EMERGENCY DECLARED, LANDING UNEVENTFUL. DURING CLIMB THE NR 2 ENGINE EXPERIENCED A COMPRESSOR STALL. NR 2 ENGINE POWER REDUCED TO IDLE AND ACFT RETURNED TO FIELD. ENGINEERING REPORTS FAN BLADES WITH LEADING EDGE FOREIGN OBJECT DAMAGE CAUSED COMPRESSOR STALL.