As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE PRE-FLIGHT INSPECTION, A SECTION OF EMERGENCY LIGHTS WERE NOTED TO BE INOPERATIVE. MAINTENANCE INSPECTED AND REPLACED THE 4LK EMERGENCY POWER SUPPLY, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-01. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.