A system for selective emergency evacuation of persons from a first level (I) to a second level (II) located above the first level (I) or to a third level (III) located under the first level comprises for evacuation to the upper level a stairs-shaped arrangement (1). According to the invention, the system is connected at one end with the first level (I) and at the other end it can be displaced between the upper level (II) and the lower level (III) or vice-versa, and can be altered to take the form of a slide (2) for evacuation to the lower level (III). In particular, the system can be advantageously used for selective emergency evacuation of persons from a deck which forms the first level (I), in particular a passenger deck (17) of a tailless aeroplane (20), to the upper side (18) of the tailless aeroplane (20), which forms the second, upper level (II), or to the underside (19) of the tailless aeroplane (20), which forms the third, lower level (III).
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