What was found
SHORTLY BEFORE LEVEL OFF NR 2 MAIN TANK SHOWED IMBALANCE. OPEN XFEED TURNED NR 2 TANKS PUMPS OFF FUEL ROSE BACK QUICKLY. CLOSED XFEED PROBLEM CONT. TRIED TO BALANCE BY OPENING XFEED AND BURNING ONLY OUT OF NR 1 MAIN TANK. ONCE BALANCED RETURNED TO NORMAL FUEL CONFIGURATION. NO FURTHER PROBLEMS NOTICED. DIV TIME: 0:39. ACCOMP TASK 28 41 00 OPS TEST FQIS NO FAULTS. SUMPED NR 2 FUEL TANK. VERIFIED NO UNWANTED TRANSFER FROM CNTR TO NR 2 TANK. REPLACED X FEED VALVE ACTR PLATE ASSY & ALIGNED VALVE WITH SPL 1771 REF AMM28 41 00. REINSTALLED ORIGINAL X FEED VALVE ACTR REF AMM28 22 21. ACCOMP GRND FUNCTIONAL CHECK OF X FEED VALVE & FQIS BITE (CURRENT INFLT AND GND FAULT) & CDS BITE REF AMM 28 41 TASK 801 & AMM 31 62 TASK 801, OPS CHECK NORMAL.