What was found
SHORTLY AFTER T/O THE LT FUEL QTY WAS NOTED TO BE 8.18 AND REMAINED STEADY THRU SEVERAL CLIMBS AND LEVEL OFFS UNTIL APPROX 33,000. WHILE CLIMBING THE LT FUEL QTY BEGAN INCREASING AT A RATE OF ABOUT 10 POUNDS PER SECOND UP TO 8.65. WE REBALANCED LT AND RT TANKS AT 8.12 WHERE IT REMAINED FOR THE NEXT SEVERAL HOURS UNTIL EMPTY. GROUNDED YES. R&R NR 1 TANK COMPENSATOR PROBE. OPS AND SYSTEM TEST OK REF AMM 28 41 21/401.