As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING DESCENT, THE POWER WAS INCREASED TO MAINTAIN AIRSPEED TARGET. NR 1 ENGINE PARAMETERS DID NOT CHANGE, BUT REMAINED INDICATING LOWER THAN NORMAL IDLE. PRECAUTIONARY ENGINE SHUTDOWN CARRIED OUT. POST-FLIGHT, THE N1 HYDROMECHANICAL SENSOR WAS CHANGED AND TESTED SERVICEABLE.