As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF, RECEIVED A FUEL IMBALANCE ALERT. CENTER PUMPS WERE ON AND MAIN TANKS WERE BALANCED PRIOR TO TAKEOFF. QUANITY CONTINUED TO DECREASE THEN STABILIZED. ACFT GROUNDED. ACCOMPLISHED OPERATIONAL AND FUNCTIONAL TEST OF CROSSFEED VALVE. OPS CHECKED OK. NO FUEL TRANSFER NOTED IAW AMM 28-22-21-710-801 & 28-22-00-730-802.