As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CROSS FEEDING FUEL FROM THE LT WING TANK TO THE RT ENG THE RT ENG FUEL BOOST LIGHT BEGAN FLASHING THEN REMAINED ON. AFTER TURNING CROSS FEED OFF, BOTH BOOST PUMPS REMAINED ON. TROUBLESHOOTING FOUND THE CROSS FEED VLV ACTUATOR ASSEMBLY DEFECTIVE PN 9914423-2 SN T51293. THE DEFECTIVE ACTUATOR WAS REMOVED & A NEW UNIT WAS INSTALLED.