As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE INSPECTION FOUND THE EMERGENCY LIGHT STRIPS 5 AND 6 AND LEFT OVERWING EMERGENCY LIGHT INOPERABLE. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 BATTERY PACK. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.