What is the difference between magnetic heading and true heading?

• A. Magnetic heading is based on true north
• B. True heading refers to compass direction
• C. Magnetic heading is relative to magnetic north, while true heading is relative to true north
• D. There is no difference, both terms are interchangeable

Answer: (C)

Magnetic heading and true heading are terms used to describe the orientation of an aircraft relative to two different types of north: magnetic north and true north. The correct answer highlights that magnetic heading is determined based on magnetic north, which is where a compass points due to the Earth's magnetic field. In contrast, true heading refers to the direction relative to true north, which is determined by the geographical North Pole.

Understanding this distinction is crucial for navigation, as pilots must account for the difference between magnetic north and true north when planning their routes and making adjustments during flight. This is especially important since magnetic north can shift over time due to changes in the Earth's magnetic field, and the difference between the two is referred to as magnetic variation or declination. Therefore, recognizing that magnetic heading is not the same as true heading helps ensure accurate navigation and flight safety.