Uncontrolled Airspace

Uncontrolled Airspace (Class G) is airspace where ATC does not exercise authority and pilots are responsible for their own separation from other traffic and terrain. No ATC clearance or radio communication is required to operate in Class G.

Class G typically extends from the surface up to the base of overlying controlled airspace (often 700 or 1,200 ft AGL in the US). VFR weather minimums in Class G are generally lower than in controlled airspace, with requirements varying by altitude (below/above 1,200 ft AGL and 10,000 ft MSL) and time of day.