As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN OVERNIGHT LINE CHECK, THE EMERGENCY ESCAPE PATH LIGHTING FROM STATION 700 (NEAR DOOR TWO) TO STATION 900 (NEAR THE LEADING EDGE OF THE WING ROOT) WAS FOUND TO BE INOPERATIVE. MAINTENANCE FOUND THE ASSOCIATED BATTERY PACK TO BE DEFECTIVE AND REPLACED IT. THE SYSTEM OPERATED NORMALLY AFTER THE BATTERY PACK WAS REPLACED.