What key information should pilots be familiar with when navigating aeronautical charts?

Pilots must be well-versed in the legend and the associated airspace classifications when navigating aeronautical charts. The legend provides critical information about the symbols, colors, and markings used on the chart, which are essential for understanding the geographical and regulatory environments in which they are operating. Familiarity with airspace classifications ensures that pilots know the rules, regulations, and operational requirements pertinent to each type of airspace, such as controlled and uncontrolled airspaces. This knowledge directly influences flight safety, compliance with regulations, and effective communication with air traffic control.

Being knowledgeable about only the symbols and colors, passenger seating arrangements, or just runways and taxiways would not provide a comprehensive understanding of the aeronautical environment necessary for safe navigation. Each of these other options lacks the holistic approach to situational awareness that the combination of the legend and airspace classifications delivers.