As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3724 THE CREW REPORTED THE EXTERIOR EMERGENCY LIGHTS DEAD. THE AIRCRAFT WAS REMOVED FROM SERVICE. NR 4 EMERGENCY LIGHT BATTERY PACK INOPERABLE. REMOVED AND REPLACED THE NR 4 EMERGENCY LIGHT BATTERY PACK IAW WORK CARD 33-002. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.