As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING PREFLIGHT INSPECTION THE CREW REPORTED AISLE PATH EMERGENCY LIGHTS TO BE INOPERATIVE IN THE REAR OF THE AIRCRAFT. MAINTENANCE REMOVED AND REPLACED THE LAST INVERTER, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.