Where is Class G airspace defined to extend up to 700 feet AGL?

Class G airspace can be defined by different visual representations on aeronautical charts. Specifically, the magenta vignette indicates the area where Class G airspace extends up to 700 feet AGL (Above Ground Level). This representation allows pilots to recognize areas where they can operate under visual flight rules (VFR) without the necessity of maintaining contact with air traffic control, as this airspace is less restrictive compared to other classes.

The magenta vignette essentially signifies a transition from Class G airspace to higher classes of airspace, which could involve controlled conditions. Understanding this helps pilots know how to navigate their operations in relation to the adjacent airspace, especially for maintaining appropriate altitudes and ensuring safety.

In contrast, other options, such as blue vignettes and red dashed lines, represent different classifications of airspace or specific airspaces with their own operational rules. The blue vignette typically indicates airspace that is controlled (Class E), and the red dashed line often marks restricted or prohibited areas. This information is crucial for pilots to acknowledge different airspace regulations that govern their flying activities.