What displayed element indicates the presence of Headings, Speeds, or Free Form information?

The HSF Indicator stands for the Heading, Speed, and Free Form information, which is crucial for air traffic controllers to ensure accurate tracking and communication for aircraft. This indicator signifies that the displayed information specifically refers to headings (the direction in which an aircraft is pointed), speeds (the velocity of the aircraft), and allows for additional free form data to be shown as necessary.

In air traffic management, it is essential to have a clear understanding of these parameters for safe and efficient operations. The presence of the HSF Indicator informs controllers that they can expect crucial navigational and performance data that aids in making informed decisions regarding aircraft separation, traffic management, and overall flight safety. The other options may refer to different indicators or symbols that do not encompass the specific data related to headings, speeds, or free form information.