Aircraft systems refer to the various components and technologies that work together to ensure an aircraft operates safely and efficiently. These systems include the avionics, which manage navigation and communication, as well as the propulsion system, responsible for generating thrust. Other essential systems include fuel management, electrical systems, and hydraulic systems, all of which play crucial roles in the aircraft's performance. In addition to these core systems, aircraft also have safety features like emergency systems and redundancies that provide backup in case of failures. Understanding these systems is vital for pilots and engineers, as they ensure the aircraft can handle different flying conditions and emergencies effectively.