The symbol next to the identifier flashes approximately ______ prior to reaching a direct to waypoint.

The symbol next to the identifier flashing approximately 36 seconds prior to reaching a direct-to waypoint indicates the timing mechanism integrated within the aircraft's navigation system. This feature serves as a visual alert to the pilot, signaling that they are approaching the intended waypoint. The timing is designed to provide the pilot with sufficient notice to prepare for any necessary actions, such as adjusting course or preparing for descent.

In navigation systems, this alert mechanism is crucial for situational awareness, ensuring pilots maintain proper flight management as they near waypoints. Being notified 36 seconds in advance allows for appropriate responses, enhancing safety and the efficiency of navigation.