As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH- DURING PERFLIGHT THE CREW NOTED THAT THE LAST THREE FLOOR EMERGENCY PROX LIGHTS FAILED TO ILLUMINATE. MAINTENANCE REMOVED AND REPLACED THE AFT EMERGENCY FLOOR LIGHT STRIP, PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.