As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW SAW BRIGHT FLASH AND A LITTLE SMOKE BEHIND 2ND OFFICER'S PANEL WHEN NR 3 FUEL BOOSTS WERE TURN OFF. BOOST TURNED BACK ON, NO SMOKE EVIDENT. COULD NOT DUP. REMOVED 2ND OFFICER'S FUEL SYS ANNUNCIATOR PANELS AND INSPECTED BEHIND HIS STATION. FOUND NO EVIDENCE OF BURN OR FIRE. NO POPPED CIRCUIT BREAKERS, NO MAINTENANCE PERFORMED.