As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LANDING, THE CREW REPORTED THAT THE NR 1 ENGINE STAYED AT IDLE AND FAILED TO RESPOND TO THROTTLE INPUTS. THE AIRCRAFT WAS ON A COMPANY REQUIRED CHECK FLIGHT FOR AN UNRELATED ISSUE AND NO PASSENGERS WERE ON BOARD. THE AIRCRAFT LANDED WITH OUT INCIDENT, NO WAS AN EMERGENCY DECLARED. THE AIRCRAFT IS CURRENTLY OUT OF SERVICE WHILE THE ISSUE IS BEING TROUBLESHOT.