As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CAPTAIN BROUGHT THROTTLES BACK TO FLIGHT IDLE AND THE NR 1 ENGINE STAYED AT A CRUISE POWER SETTING. IN FLIGHT SHUTDOWN PERFORMED ON THE LT ENGINE. DECLARED EMERGENCY. MAINTENANCE REPLACED THE LT ENGINE FUEL CONTROL UNIT. ENGINE CHECKED SERVICEABLE AND AIRCRAFT RETURNED TO SERVICE.