What is the correct heading reporting format in Southern Domestic Airspace?

In Southern Domestic Airspace, headings are reported in magnetic format. This is essential for pilots and air traffic control to maintain consistency and safety in navigation. Magnetic headings take into account the Earth's magnetic declination, which can affect compass readings. Therefore, reporting in magnetic format ensures that all aircraft are using the same reference point for navigation, facilitating effective communication between pilots and air traffic controllers.

In contrast, true headings would be based on true north, which varies depending on the geographic location and does not account for magnetic variation. Geographic headings, while useful for some calculations, do not provide the necessary context for navigation purposes within Southern Domestic Airspace. The term "standard" does not specify a recognized heading format in aviation regulatory practices and thus does not apply to how headings are reported in this context. By adhering to magnetic reporting, pilots are able to navigate effectively and align their operations within airspace regulations.