As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - CREW REPORTED RIGHT MAIN TANK FUEL IMBALANCE ON CLIMBOUT. CROSSFEED STARTED BUT DID NOT FIX IMBALANCE. EMERGENCY DECLARED FLIGHT RETURNED LAX LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT MAIN TANKS FORWARD AND AFT BOOST PUMPS. SYSTEM GROUND CHECK NORMAL OPERATION.