As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMMEDIATELY AFTER TAKE OFF, RECEIVED A FUEL IMBALANCE. TANK 1 INDICATION DROPPED APROX. 900 LBS. BOTH QUANTITY INDICATIONS WERE ERRATIC AND BECAME UNRELIABLE. DECLARED EMERGENCY AND RETURNED TO DEPARTURE. REMOVED AND REPLACED FUEL T/U NR 2 ON LT SIDE AND FUEL T/U NR 3 AND 4 ON RH SIDEIAW AMM 28-41-02 SYSTEM OPS CHECKS GOOD. FUEL TANK UNIT