As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 4291, DURING MAINTENANCE INSPECTION THE FLOOR PROXIMITY STRIP LIGHT FORWARD OF THE EMERGENCY EXIT WAS FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE #2 EMERGENCY LIGHT POWER SUPPLY BATTERY PACK, OPERATIONALLY TESTED WITH NO DEFECT, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.