What should a pilot do when changing from one frequency to another?

When changing from one frequency to another, informing the current controller of the frequency change is crucial to ensure clear and safe communication with air traffic control (ATC). This practice allows the controller to keep track of the pilot's intentions and maintain situational awareness. By notifying ATC, the pilot helps ensure a smooth transition and minimizes the risk of losing communication inadvertently, which can occur if a pilot switches frequencies without informing the controller.

In busy airspace, maintaining open lines of communication is vital for the safety of all aircraft; ATC relies on updates from pilots about their plans, particularly when transitioning frequencies. It also helps ATC manage their resources effectively and provide assistance as needed. Therefore, this practice aligns with standard operating procedures and reinforces the collaborative nature of aviation safety.