As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3842 THE FLIGHT CREW FOUND THE EMERGENCY LIGHT SWITCH IN THE ARMED POSITION. THE EMERGENCY LIGHT BATTERIES WERE DEAD. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 1, 2, 3 AND 4 BATTERIES. SERIAL NUMBERS OFF ARE AS FOLLOWS: NR 1 109525, NR 2 109577, NR 3 109528, AND NR 4 109634. THE AIRCRAFT WAS RETURNED TO SERVICE.