What was found
FUEL APPEARS TO BE MIGRATING FROM L INNER TO CENTER TANK AT 2-300LBS/HR.(1300LBS OVER 4 HR FLT.) AIRCRAFT OPERATED IN PAYLOAD, (CTR AND TRIM DEACTIVATED.) PERFORMED GVI ON LH CENTER TANK ENGINE FEED LINES IN CENTER TANK THAT GOES TO THE PUMP FOUND 2 COUPLING LEAKING. REMOVED, CHANGE ORINGS AND REINSTALLED COUPLING REF UPS A300 AMM 28-00-00-401 THROUGH STEP E. OPS CHECK DUE. CW REMAINING STEPS OF AMM 28-00-00-401, CW FUEL FEED PIPELINE SYSTEM TEST REF AMM 28-21-00. OPS CHECK GOOD. RAN LH INNER BOOST PUMPS WITH CROSSFEED AND LEFT INNER/CENTER ISOLATION VALVES CLOSED, ZERO FUEL MIGRATED IN 15 MIN. OK TO CONTINUE