As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING MAINTENANCE INSPECTION THE EMERGENCY EXIT SIGN ON THE LEFT HAND COCKPIT PARTITION WA SFOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE AFFECTED SIGN, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.