What was found
DTW - EMERGENCY LIGHTS IN CABIN INOPERATIVE. REPLACED BATTERY PACK AND CHARGER ASSEMBLY FOR EMERGENCY LIGHTS IN CABIN. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DTW - EMERGENCY LIGHTS IN CABIN INOPERATIVE. REPLACED BATTERY PACK AND CHARGER ASSEMBLY FOR EMERGENCY LIGHTS IN CABIN. SYSTEM GROUND CHECKED NORMAL OPERATION.