On runway RWY 18, what is the approximate heading indicated on the compass?

The correct answer is approximately 185°. In aviation, runway headings are typically aligned with the magnetic compass direction, rounded to the nearest 10 degrees. Runway RWY 18 is oriented towards 180°, which corresponds directly to the compass heading where the aircraft would be flying.

However, variations in magnetic declination and specific airport markings can lead pilots to interpret runway headings with slight adjustments. As such, on compass headings, RWY 18 could be noted as approximately 185° to account for this nuance.

This choice reflects common practices in determining compass headings that pilots should be aware of when navigating, ensuring they are aligned accurately with runway designations. Understanding this relationship between runway numbers and compass headings is crucial for safe takeoff and landing procedures in aviation.