In order to be able to provide in-flight emergency medical aid to patients on board more efficiently with minimum space, an aircraft, in one example, includes a seat device providing a first section of a reclining position region and a reclining position device which includes a second section of the reclining position region. The foil assembly may comprise a substrate having a series of alternating thermoelectric legs formed thereon. The apparatus has a guide beam projector, which is embodied for generating a guide beam from light in the visible wavelength range.