As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - FLT NR 456 - RIGHT FUEL VALVE CLOSED LIGHT ILLUMINATED IN FLIGHT, CAME ON DIM AND WENT TO BRIGHT AND STAYED BRIGHT. UPON DESCENT, LIGHT OPERATED NORMAL. MAINTENANCE CHECKED FUEL SHUTOFF VALVE (P/N 61185 S/N B5923) MANUALLY AND ELECTRICALLY OPERATED VALVE. CHECKED PINS ON OVERHEAD AND VALVE. NO DEFECTS FOUND. CHECK VALVE OPERATION IN OPEN AND CLOSED POSITION CHECKED GOOD. (M)