What was found
DURING CLIMB, OUT OF KDTW, THE LEFT ENGINE AMBER 'VIBRATION EXCEEDANCE' CAS MESSAGE WAS RECEIVED. POWER ON THE LT ENGINE WAS REDUCED, IAW THE AFM, AND THE MESSAGE EXTINGUISHED. THERE FORE, THE TRIP CONTINUED TO DESTINATION AND AACI MX PROVIDER AT KDTW WAS CONTACTED. LEFT ENGINE FAN BALANCE WEIGHT WAS REINSTALLED IN THE INCORRECT POSITION AFTER NDT INSPECTION OF FAN HUB. ENGINE VIBRATION EXCEEDANCE INSPECTIONS HAVE BEEN COMPLETED PER THE BR710 MAINTENANCE MANUAL CHAPTER 71-00-00. FUEL TUBE NR 20 HAS BEEN REPLACED PER THESE INSTRUCTIONS. NO DISCREPANCIES NOTED DURING THESE REQUIRED INSPECTIONS. THE LT ENGINE FAN WAS BALANCED PER THE TRIM BALANCE PROCEDURES IN THE BR710 MAINTENANCE MANUAL CHAPTER 71-00-00