As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. DURING CRUISE WITH ALL FUEL PUMPS ON, THE RIGHT MAIN WENT TO 1000 LBS OUT OF BALANCE. REMOVED AND REPLACED RIGHT CENTER FUEL BOOST PUMP IAW AMM 28-22-41(AALA20170124014) AND ENGINE CROSSFEED VALVE IAW AMM 28-22-21. LEAK AND OPERATIONAL CHECK GOOD.