As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY EVACUATION LIGHTING SYSTEM FOUND TO BE DEFECTIVE. MAINTENANCE REMOVED AND REPLACED THE BATTERIES IN THE POWER SUPPLY BATTERY PACK. AN OPERATIONAL CHECK WAS ACCOMPLISHED PER AMM 33-50-00, OPS CHECKED NORMAL. AIRCRAFT RETURNED TO SERVICE.