As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 9812 MAINTENANCE REPORTED THE EMERGENCY LIGHTS INOPERABLE AFT OF THE EXIT ROW AND BOTH OVER WING LIGHTS. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 BATTERY AND CHARGER IAW WC 33-700-19. THE OPERATIONAL CHECK WAS GOOD IAW WC 33-700-17. THE AIRCRAFT WAS RETURNED TO SERVICE.