What was found
(CAN) ON DESCENT, LANDING 13000 FEET. LT ENGINE HAD A FUEL FLOW FLUCTUATION, PILOT USED THE BOOST PUMP AND CROSSFEED WITHOUT SUCCESS, 5 MINUTES LATER THE ENGINE STOPPED, HE TRIED TO RESTART WITHOUT SUCCESS. LANDING WAS WITHOUT ANY PROBLEM. THE NEXT DAY, WAS UNABLE TO REPRODUCE THE PROBLEM. AFTER TROUBLESHOOTING CHART WITH MFG, THE FCU HAS BEEN REPLACED.