HDG is an acronym that stands for Heading. It is used to refer to the direction or course that a vehicle or vessel is moving towards. In navigation and aviation, heading plays a crucial role in determining the orientation and route of an aircraft, ship, or even a vehicle on land.
Specifically, in aviation, HDG refers to the compass or magnetic heading of an aircraft. It represents the numerical value, usually expressed in degrees, indicating the direction of the aircraft's nose in relation to the magnetic north or the heading reference selected by the pilot or autopilot system.
HDG is often displayed on cockpit instruments such as the heading indicator or primary flight display, allowing the pilot to accurately monitor the aircraft's course and make necessary adjustments if required. It is an essential component for navigation, as it enables pilots to follow planned routes, navigate around obstacles, and maintain proper alignment during flight.
For vessels, HDG also represents the forward direction that a ship is facing or moving towards. It is typically measured in degrees clockwise from the north, and is a key factor in plotting courses, avoiding hazards, and maintaining safe navigation in open water.
Overall, HDG serves as a critical reference for pilots and navigators, aiding in the safe and efficient movement of aircraft and vessels by providing an accurate and reliable indication of their current direction.
