As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - THE CREW REPORTED THA TTHE EMERGENCY EXIT SIGNS AND FLOOR STRIPS DID NOT ILLLUMINATE. MAINTENANCE REMOVED AND REPLACED THE EMERGENCY LIGHT BATTERY PACKS AT LOCATIONS 1, 3, AND 4; OPERATIONALLY TESTED WITH NO DEFECTS AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.