As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED MAINTENANCE THE OVERWING EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NR 4 EMERGENCY LIGHT BATTERY PACK, OPERATIONALLY TESTED THE EMERGENCY LIGHTING SYSTEM AND CLEARED THE DISCREPANCY.