As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, CREW REPORTED FUEL IMBALANCE OF 1000 LBS IN CRUISE WITH ERRONEOUS READING BETWEEN 300-800 LBS ON CLIMBOUT. CREW PERFORMED AIR RETURN BACK TO DEPARTURE WITHOUT ISSUE. MX R & R NR 3 TANK UNIT IAW AMM 28-41-02, OPS AND LEAK CHECKED SUCCESSFULLY. ACFT WAS APPROVED FOR RETURN TO SERVICE.