As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT INSPECTION, THE CENTER SECTION OF THE EMERGENCY FLOOR PATHWAY LIGHTING WAS DISCOVERED TO BE INOPERATIVE. MAINTENANCE INSPECTED AND REPLACED THE BATTERY PACK IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-00. OPERATION CHECK WAS GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.