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 FORWARD EMERGENCY EXIT SIGNS WERE FOUND INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE AFFECTED BATTERY PACK IAW ATR 42-500 JIC 33-51-00, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (X)