As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING MAINTENANCE INSPECTION NUMEROUS EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NUMBER 1 EMERGENCY LIGHT BATTERY POWER SUPPLY, OPERATIONALLY CHECKED WITH NO DEFETCS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.