You are defining the aircraft electrical power generation and distribution system, by generating input for the internal design team as well as for external system suppliers, such as sketches, block diagrams, hardware definition and specifications. You are coordinating external supplier activities for the aircraft electrical system You are validating detailed design data during document and drawing checks You are verifying compliance of the electrical system with certification requirements during laboratory, ground and flight tests You are providing input for and checking compliance documents and participate in certification reviews with certification authorities.