What is the maximum altitude that Class G airspace will exist?

Class G airspace, also known as uncontrolled airspace, extends from the surface up to a specified ceiling. In the United States, Class G airspace typically exists up to 14,500 feet Mean Sea Level (MSL), but there are specific regulations and variations regarding certain areas near airports and in mountainous regions. The ceiling of Class G airspace varies depending on several factors, including the type of airspace it is located near, but the general maximum altitude is indeed 14,500 feet MSL.

This altitude is significant as it marks a transition point to Class E airspace, which is controlled airspace where specific communications and regulations must be observed. Understanding the characteristics of Class G airspace, including its altitude limits, is crucial for pilots, especially in relation to navigation, operations, and compliance with regulations regarding altitude, visibility, and other flight rules.