What does a communication changeover point look like on an airport diagram?

A communication changeover point on an airport diagram is represented as a bolded line that resembles a 'zipper'. This visual cue is designed to ensure that pilots and air traffic controllers can easily identify key transition areas where communication may shift from one frequency to another as an aircraft approaches or departs from an airport.

This representation is critical for aviation safety and efficiency, as understanding communication changeover points allows pilots to know exactly when to switch frequencies, ensuring they maintain proper communication with the relevant control facilities. Clear and recognizable symbols help foster quick recognition, minimizing the risk of confusion during crucial phases of flight operations.