What was found
ON CLIMB-OUT, L INR PUMPS HOWEVER, LFT INR ISOLATION VALVE WAS AMBER, NO FUEL WAS BEING BURNED. GRAVITY FED FUEL MANUALLY TO BALANCE. LANDED W/ 28.8 ON LT AND 24.8 ON RT. LANDED OVER MAX LANDING WT. 200 FPM DESCENT ON LANDING. LANDING WT 276.1 AND MAX LANDING WT LIMIT 267.9. T/S AUTO FUEL FEED SYS PER REVISED/AMM 28-21-00-5, NO DEFECTS, REMOVED AND REPLACED RELAYS 139QA, 136QA, 89QA, 140QA, 131QA, 133QA, CONFIRMED WIRING CONFIG, OPS CHECK NORMAL. R & R RT NR 2 FUEL PUMP PRESS SW TANK ISO VLV TEST/AMM 28-22-00-5. R & R 73QU, 140QA RELAY, 154VD. R & R SDAC AND LEFT INNER ISOL VLV, NO FAULTS. ALL TESTS PASSED, RETURNED A/C TO SERVICE. NO PART CONFIRMED DEFECTIVE.