Where does Class G airspace start?

Practically speaking, it starts at the surface and extends up until it hits Class E airspace. On a map, Class G's ceiling is the floor of Class E airspace. And, it's always exclusive. For example, if Class E starts at 700 feet AGL, Class G goes up to, but doesn't include, 700 feet AGL.



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Unless designated at a lower altitude, Class E airspace begins at 14,500 MSL over the United States, including that airspace overlying the waters within 12 NM of the coast of the 48 contiguous states and Alaska, up to but not including 18,000 feet MSL, and the airspace above FL 600.

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A pilot must maintain a vertical distance of 1,000ft above, 500ft below, and 2,000ft horizontally in Class G airspace at these altitudes. When operating at and below 1,200ft AGL in Class G airspace, a pilot must remain clear of clouds during the day and have a minimum forward flight visibility of 1sm.

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Class G airspace is most easily found on a sectional map when a fading, thick blue line appears. This line shows enroute Class E airspace starting at 1,200 ft AGL on the soft side of the boundary.

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But as a perspective, with the exception of Class A airspace, which is ALL of the airspace 18,000 feet and above, Class E & G are pretty much all of the other airspace EXCEPT limited areas around airports with operating control towers. Those areas around airports with control towers are the B, C, and D airspace.

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Permission is not required. Think of G as in “Ground” (It's the airspace that covers most of the ground in the U.S.) Class G airspace is uncontrolled airspace that has not been designated as Class A, B, C, D, or E. The only requirements are to have 1 mile of visibility and to stay clear of clouds.

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Class G airspace is the only uncontrolled airspace out there in the United States. Thus, both IFR and VFR traffic is also uncontrolled here. To find out Class G airspace, note that it exists where the other five airspace classes, i.e., Class A, B, C, D, or E, don't.

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Class Golf ( Class G ) airspace is the uncontrolled govern free airspace which is void from Air Traffic Control ( ATC ) jurisdiction. Class G airspace supports both Instrument Flight Rules ( IFR ) and Visual Flight Rules ( VFR ) operations within.

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Classes A through E are all types of controlled airspace. This is where air traffic control has various levels of jurisdiction. Class G is considered “uncontrolled.” In Class G airspace, pilots are solely responsible for their own navigation and separation from traffic, terrain, and obstructions.

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Part 107 remote pilots may fly in Class G airspace up to 400 feet AGL, and within 400 feet of a structure without prior coordination with ATC.

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