What does the term "magnetic course" refer to?

The term "magnetic course" refers specifically to a true course that has been corrected for magnetic variation. In aviation, the true course is the path that an aircraft follows over the Earth's surface and is usually referenced to true north. However, since magnetic north differs from true north due to the Earth's magnetic field, adjustments are necessary to determine the course in relation to magnetic headings used in navigation.

By applying the magnetic variation (which can be east or west depending on your geographic location), pilots convert true courses into magnetic courses. This conversion is critical for ensuring accurate navigation and maintaining the intended flight path, making it essential knowledge for pilots and flight instructors alike.