As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE RIGHT ENGINE BEGAN TO OVERSPEED DURING INITIAL DESCENT. THE RIGHT THROTTLE POSITION HAD NO EFFECT ON ENGINE CONTROL, EVEN AT IDLE, THE ENGINE CONTINUED TO ACCELERATE TO TOLERANCES. THE CREW DECLARED AN EMERGENCY AND PERFORMED AN ENGINE PRECAUTIONARY SHUTDOWN AND LANDED UNEVENTFULLY.