As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT EMERGENCY EXIT SIGNS NEAR R2 DOOR AND LAV G ILLUMINATED IN FLIGHT. IT HAPPENED TWICE AND THE LIGHTS STAYED ON FOR 20-30 SECONDS THEN SHUT OFF. GROUNDED - YES. PERFORMED EMERGENCY LIGHTS OPERATIONAL CHECK REF AMM 33-51-00, NO DEFECTS NOTED.