As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT WAS EN ROUTE FROM DUT TO ANC WHEN FLIGHT CREW PULLED TORQUE BACK TO 60 PERCENT FOR DESCENT THE NR 2 ENGINE WENT TO 20 PERCENT CREW HEARD A LOUD BANG, ITT RISING, AUTO IGNITION CAME ON OVERTEMP LIGHT CAME ON FOR 1 SEC. MEMORY ITEMS FOR COMPRESSOR STALL STARTED ENGINE RECOVERED. MX FOUND FIRST STAGE INLET GUIDE VANES VERY STIFF AND A BENT IGV ACTUATING ARM GOING TO THE ACTUATING RING OF THE IGV'S. ENGINE WAS REMOVED AND REPLACED.