As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 4027, THE CREW REPORTED THAT THE EMERGENCY LIGHTS FLASHED INTERMITTENTLY DURING FLIGHT. MAINTENANCE RESET THE FLIGHT ATTENDANTS EMERGENCY LIGHT SWITCH, OPERATIONALLY CHECKED THE EMERGENCY LIGHTS WITH NO DEFECTS NOTED. AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.