As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - MX, DURING ROUTINE INSPECTION, MAINTENANCE FOUND EMERGENCY LIGHT STRIP INOP. MAINTENANCE REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK POSITION 3. OPERATIONAL TESTS WERE PERFORMED SUCCESSFULLY. AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.