As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED, RT CENTER FUEL TANK TRANSFER VALVE CYCLES ON AND OFF 5 SECONDS WITH RT WING QTY AT 13500 LBS FULL. NOT ALLOWING QTY TO DROP, PUSH BUTTON OPERATES VALVE NORMALLY. REPLACED FUEL LEVEL SENSING CONTROL UNIT AND ACCOMPLISHED A SATISFACTORY OPS CHECK IAW AMM 28-46-34.