As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REVENUE FLIGHT, IN DESCENT MODE, THE PILOT NOTICED ENGINE NR 2 SURGE AND A TORQUE REDUCTION OF 40 PERCENT. THE ENGINE SURGE RE-OCCURRED WITH ABNORMAL NOISE. THE PILOT ELECTED TO SHUTDOWN THE ENGINE AND LANDED WITHOUT FURTHER INCIDENT. THE HBOV WAS REPLACED AND AN ENGINE INSPECTION WAS PERFORMED. THE ACFT RETURNED TO SERVICE .