What was found
(CAN) WHEN A/C WAS BEING FUELED, CENTER TANK WAS FILLED TO 2000 LBS AND WINGS FILLED TO 5500 LBS. ALSO CREW GOT A FUEL IMB CAUTION ON CLIMB OUT ABOUT 5 MIN AFTER TAKE OFF. USED PUMPS AND GRAVITY TO REMOVE FUEL FROM CENTER TANK ASSY. INSPECTED LT CENTER TANK AND FOUND FUEL TUBE ASSY CRACKED. RAI LT CENTERLINE FUEL TUBE ASSY. LEAK AND OPS CHECKED GOOD PER CRJ AMM 28-13-25