A device for selective emergency evacuation of persons from a first level to a second level situated above the first level, or to a third level situated below the first level. For evacuation to the second level a stair arrangement is provided. One end of the device is connected to the first level while the other end is displaceable between the second level and the third level or vice versa. For evacuation to the third level, the device is changeable to a slide. The device may provide for emergency evacuation of persons from a first level deck, or passenger deck of a blended wing-body aircraft, selectively to the top, second level of the aircraft, or to the bottom third level of the aircraft.
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