The invention relates to a method for fighting fires in high-rise buildings on the basis of a rotary-wing aircraft (2), in particular a helicopter (2), which rotary-wing aircraft (2) comprises an extinguishing monitor (3), comprising at least one, in particular telescopic jet pipe (9), said jet pipe (9) being connected by means of a hose (4), in particular a high-pressure hose, in particular via a hose drum (5), to a fire extinguishing agent reservoir (8), wherein the fire extinguishing agent reservoir (8) is situated on the ground, characterised in that the high-pressure hose (4) in a hazard situation can be capped off by a separating device (18), in particular a hose-separating device or a hose- and suspension cable-separating device.
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