As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: RIGHT CENTER FUEL PUMP FAILED IN FLIGHT (XFEED OK). MAINTENANCE NOTED THAT THIS AIRCRAFT NOT EQUIPPED WITH CENTER TANK FUEL PUMPS BUT REPLACED THE RIGHT HAND CENTER TANK TRANSFER VALVE ACTUATOR (12QL) PER AMM 28-26-51. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.