What was found
DURING CRUISE FLIGHT, NR 2 ENGINE BEGAN TO EXPERIENCED COMPRESSOR STALLS. THRUST REDUCED AND STALL CEASED. OPERATED NR 2 ENGINE AT IDLE THE REMAINDER OF THE FLIGHT. AIRCRAFT DIVERTED TO DSM AND LANDED WITHOUT FURTHER INCIDENT. GROUND MAINTENANCE INSPECTED THE ENGINE AND FOUND NR 2 ENGINE INTAKE NOSE DOME MISSING. NEW NOSE DOME WAS INSTALLED. BORESCOPE INSPECTED ENGINE, NO DAMAGE FOUND. AIRCRAFT WAS GROUND RUN AND RETURNED TO SERVICE.