Certified Flight Instructor - Flight Instructor Airplane Practice Exam

When operating under VFR at more than 3,000 feet AGL, cruising altitudes are based on what?

1. The true course being flown.

2. The magnetic course being flown.

3. The magnetic heading being flown.

4. The altitude of the destination airport.

The correct answer is: The magnetic course being flown.

When operating under VFR (Visual Flight Rules) at altitudes above 3,000 feet AGL (Above Ground Level), cruising altitudes are determined based on the magnetic course being flown. This practice ensures that aircraft are flying at altitudes that promote safe separation and organization in the airspace, particularly in areas with high traffic. The rule regarding cruising altitudes states that pilots should maintain odd thousands plus 500 feet for magnetic courses of 0 to 179 degrees, and even thousands plus 500 feet for magnetic courses of 180 to 359 degrees. This system encourages a structured format for altitude assignment, reducing the likelihood of mid-air collisions and improving situational awareness among pilots navigating at higher altitudes. Understanding this standard is essential for safe flight planning and navigation, as it aligns with FAA regulations and helps maintain order in busy airspace environments. Being aware of the magnetic course rather than the true course or magnetic heading helps account for the Earth's magnetic variation, ensuring that pilots adhere to the correct altitude placements as they navigate.