Can the 4th line be used to record pilot requests in radar operations?

Using the 4th line to record pilot requests in radar operations is permissible if it is available for use. This line can serve as an effective means for controllers to document essential communications and requests made by pilots. The flexibility in utilizing this line allows for improved situational awareness and record-keeping, aiding both the controllers and pilots in maintaining clear communication.

While it is critical to follow specific procedures and protocols regarding communication and recording, the inherent availability of the 4th line makes it a practical option for capturing pilot requests as needed, thereby enhancing operational efficiency. The other choices suggest restrictions or limitations that would not align with the operational practices that encourage effective communication management in air traffic control.