Does it matter which system? What if it affects a system that is only used once in a blue moon? But is needed that day at that moment? If the engines are turning, the a/c is using dozens of systems to get you safely to your destination.
One of the simple problems is the characteristic interference that a mobile (c ell) phone makes when it is switched on that can be picked up on any audio system. When you are driving a car, you can here the noise on the audio speakers, just before the phone starts to ring, or receives a text (SMS) message. We have had many FC on here reporting that they hear that sound in their headphones when they are communicating with the tower. Not good.
Enjoy the leisure time, close your eyes and rest.