The true heading is the direction of the aircraft in relation to true north, while magnetic heading is the direction of the aircraft in relation to magnetic north. The difference between the two is called the magnetic variation, which varies depending on location and can be found on aeronautical charts.
The appropriate heading for a flight is determined by a combination of factors, including wind direction and speed, aircraft performance, and air traffic control instructions. Pilots also use navigation aids such as VORs and GPS to determine the most direct and efficient route to their destination.
A heading indicator, also known as a directional gyro, shows the pilot the current heading of the aircraft. It is used as a primary reference for maintaining the desired heading during flight, especially in situations where other navigation aids may not be available or reliable.
Yes, the heading can change during a flight due to various factors such as wind direction and air traffic control instructions. Pilots may also need to adjust their heading to avoid weather or other aircraft, or to stay on their planned flight path.
Pilots communicate their desired heading to air traffic control through radio transmissions. They may also use visual hand signals or flight instruments to confirm the heading they intend to fly.
