What effect does magnetic variation have on navigation systems in modern aircraft?

Magnetic variation, the difference between magnetic north and true north, can significantly affect navigation systems in modern aircraft. If variation is not accounted for, it can lead to considerable navigation errors, especially during the transition from one geographic location to another. For instance, when an aircraft relies on magnetic headings derived from a magnetic compass, failure to adjust for local magnetic variation can mislead the aircraft’s course, resulting in deviations from intended flight paths.

Modern aircraft utilize various navigation systems, including GPS, which generally account for variation, but other systems may still rely on magnetic references. Thus, when pilots and navigators fail to correct for magnetic variation, it can compromise the accuracy of their intended navigation, leading to potential safety risks. Therefore, understanding and correcting for magnetic variation remains crucial in aviation to ensure precise navigation.