Air-Conditioning System For An Aircraft

An air-conditioning system for an aircraft, comprising:

• a fresh air line;
• a recirculation device, with a cabin air inlet and a recirculation air outlet, for recirculating cabin air;
• an air-mixing device;
• an air distribution system with multiple cabin air outlets;
• and
• a control unit,
• wherein the air-mixing device is configured to be coupled to the recirculation outlet and to the fresh air line, and has a mixed air outlet coupled to the air distribution system,
• wherein the control unit is configured to determine or to receive flight-specific parameters characterizing the flight state of the aircraft, and to determine or to receive environment-specific parameters characterizing an air quality in the environment of the aircraft,
• wherein the control unit is configured to bring about a first operating state of the air-conditioning system during a first flight state, which is outside cruising flight, and in the case of a predefined limit value of at least one environment-specific parameter being exceeded, and to bring about a second operating state of said system during a second flight state, which is outside the first flight state, and
• wherein, in the second operating state, the fresh air line is fluidically connected to the air-mixing device, and wherein, in the first operating state, the fresh air line is separated from the air-mixing device.