As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"WING O FILL R" AMBER LIGHT CAME ON IN FLIGHT, LOST ABOUT 400 LBS OF FUEL. INSPECTED RIGHT WING OUTBOARD TRANSFER VALVE. NO DEFECTS NOTED. PERFORMED FUEL TRANSFER SYSTEM SHUTOFF TEST. FOUND ALL OPERATION NORMAL. NO FURTHER ACTION TAKEN. WORK PERFORMED IAW CHAPTER 28-20-00 OF THE CITATION 750 MM.