As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED AFTER TAKEOFF ON CLIMBOUT RIGHT MAIN FUEL QUANTITY DECREASED RAPIDLY. THE RATE OF FUEL LOSS DECREASED WITH ALL FUEL PUMPS ON EXCEPT CENTER RIGHT ELECTRIC BOOST PUMP WHICH WAS OFF DUE TO MEL. EMERGENCY DECLARED FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. MAINTENANCE CURRENTLY TROUBLESHOOTING. SYSTEM GROUND CHECK NORMAL OPERATION.