As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNWANTED FUEL TRANSFER FROM RIGHT TANK INTO CENTER TANK DURING CRUISE. SECOND WRITE UP FOR SAME ISSUE ON 9/11/2025 GB 845. ONLY APPARENT ON FLIGHTS LONGER THAN ONE HOUR. PRESSURIZED FW+AFT R/H FUEL PUMPS FOR 1HR PER FIM 28-21 F/T 821 NO FUEL TRANSFERRED OBSERVED. SYSTEM CONSIDERED OK AT THIS TIME. AIRCRAFT RETURNED TO SERVICE.