Definition
Class G Airspace is uncontrolled airspace — airspace in which air traffic control has no authority or responsibility to direct aircraft. It generally exists from the surface up to the base of the overlying controlled airspace (often 700 or 1,200 feet AGL, but sometimes higher in remote areas). Pilots operating in Class G must still follow the applicable visual flight rules, including minimum visibility and cloud clearance requirements, but no clearance or radio contact with ATC is required.
Plain English
Class G is the airspace where ATC does not control traffic. Pilots fly there without needing permission, but they must still follow the basic rules for staying clear of clouds and keeping enough visibility to see and avoid other aircraft.
Context Anchor
Pilots encounter Class G Airspace when reading airspace rules, checking weather minimums, or operating at low altitude in areas not covered by controlled airspace.
Why Pilots Care
Pilots must maintain vigilance and follow visual flight rules since ATC has no responsibility for traffic separation.
Intuition Check
Do not read “uncontrolled” as “no rules.” In Class G Airspace, the rules still apply; it simply means air traffic control is not normally controlling traffic there.
Example Sentence 1
Below 1,200 feet AGL in that rural area, the pilot was operating in Class G airspace and did not need to contact ATC.
Example Sentence 2
Below 1,200 feet AGL in Class G airspace, the pilot maintained 1,000 feet above and 2,000 feet horizontal separation from clouds.