SITE X to Tree Field heading?

• A. 150
• B. 180
• C. 175
• D. 200

Answer: (C)

In map navigation, the heading is the direction you must fly from your current position to the target, measured clockwise from north. From SITE X to Tree Field, the line of travel sits almost due south, but Tree Field is slightly to the east of that exact south line. That means you should head a bit to the east of south, which is 5 degrees east of 180 degrees. So the bearing is 175 degrees. In other words, fly toward 175 to reach Tree Field.

The other headings would overshoot or veer off the target: 150 would point more to the southeast, 180 is straight south, and 200 would head southwest. If the chart provides magnetic variation, apply it as needed, but the directional relationship on the map places the correct heading at 175 degrees.