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 EXTERIOR SLIDE ILLUMINATION LIGHT WAS FOUND TO BE INOPERATIVE. MAINTENANCE FOUND THE ASSOCIATED BATTERY PACK AND POWER SUPPLY TO BE DEFECTIVE AND REPLACED THEM. SYSTEM OPERATION WAS NORMAL AFTER THE BATTERY PACK AND POWER SUPPLY WERE REPLACED.