As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH- DURING PREFLIGHT THE CREW NOTED THAT THE EMERGENCY EXIT LIGHT ON THE LEFT HAND PANEL AROUND THE EMERGENCY DOOR OVERWING IS INOP. MAINTENANCE REMOVED AND REPLACED THE NR 4 EMERGENCY LIGHT DC/AC INVERTER, PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.