Right at the parking position, ambient air is treated (filtered, compressed, cooled or heated) in a compressor system (basically an oversized air conditioner). The air is then fed directly into the interior of the aircraft cabin via an insulated hose.
For widebody jets, Munich Airport has developed its own innovative design: a hose truck with a built-in Y-coupling. It distributes the air simultaneously through a hose to two inlets on the aircraft in order to heat or cool the cabin interior.
The PCA is automatically controlled. Through an interface to the flight data system, it knows exactly which plane is currently docked and supplies it with the right volume of energy.
Contribution to the airlines' CO2 reduction
Munich Airport has set itself the goal of reducing its own emissions (in technical terms: Scope 1 and 2) to net zero by 2035. However, the airport would also like to support other companies operating on the airport campus in reducing their emissions. In this so-called Scope 3 (third-party emissions), the use of PCA systems can prevent the emission of up to 23,500 tons of CO2 in one year.