ACSYS-EE covers the EASA FCL learning objectives of chapter 021 09 00 00 ELECTRICS, i.e. charge, DC current, voltage and power, linear components and linear networks, capacitors and inductors, AC current and transformers, diodes and rectifier networks. All of this is discussed regarding the application in general and transport aircraft. Additionally, it will be looked at how electrical systems can replace hydraulics and pneumatics to achieve better energy efficiency.