What term is used for the suggestions made to pilots regarding headings when using tower radar displays?

The term used for the suggestions made to pilots regarding headings when using tower radar displays is "suggested." This term implies that the headings provided by air traffic control are intended to guide pilots in a way that enhances safety and efficiency, while still allowing the ultimate decision to rest with the pilot. "Suggested" conveys that the information is there to assist the pilot rather than impose a strict requirement.

The other options, though they might seem relevant, fail to capture the essence of the guidance provided by air traffic control. "Mandatory" would imply that pilots are obligated to follow the instructions without exception, which is not the case for radar suggestions. "Recommended" often indicates a higher level of endorsement but still lacks the flexibility inherent in "suggested." "Advisory" is more commonly associated with warnings or information that does not necessarily require action, making it less accurate in describing proactive guidance toward specific headings. Thus, "suggested" perfectly aligns with the context of guidance in this scenario.