ATPL EASA Radio Navigation Practice Exam - Practice Test & Study Guide

Plotting a course on a sectional chart involves a systematic approach to navigation that ensures accuracy and safety. The correct method is to identify key waypoints or navigational points on the chart and then draw a line between these points to represent the intended route. It is crucial also to adjust for magnetic variation to ensure alignment with the Earth's magnetic field, as this affects compass readings. This adjustment is essential in making sure that the plotted course corresponds correctly to the true heading needed for navigation.

Using a GPS system exclusively may provide accurate positioning and routing, but it doesn't engage the fundamental skills of navigation using traditional charts. Relying solely on verbal instructions from air traffic control does not involve plotting a course on the chart and lacks the personal responsibility of a pilot in understanding their route. Finally, while marking obstacles is an important safety measure, it is not part of the basic process of plotting a course, which focuses on establishing a route and adjusting for navigation factors.