Class G (uncontrolled) airspace

Class G airspace is uncontrolled: ATC exercises no authority and provides no separation, though flight service and traffic advisories may still be available. It exists mostly in a thin layer near the surface, especially in rural areas, extending up to wherever the overlying Class E begins (often 700 or 1,200 ft AGL, sometimes higher in remote regions).

Because there's no ATC service, Class G has the most permissive VFR weather minimums — but they still exist, and they vary by altitude and time of day:

• Day, at or below 1,200 ft AGL: 1 statute mile visibility and clear of clouds.
• Night, at or below 1,200 ft AGL: 3 SM and 500/1,000/2,000 cloud clearance (with a local-pattern exception).
• Above 1,200 ft AGL but below 10,000 ft MSL: 1 SM day / 3 SM night, with 500/1,000/2,000 clearances.
• At or above 10,000 ft MSL: 5 SM and 1,000/1,000/1-mile clearances.

Class G is where a lot of training, crop-dusting, and backcountry flying happens. The catch is that "clear of clouds" with 1 SM is genuinely marginal — legal isn't the same as safe. Maintain a personal-minimums buffer well above the regulatory floor.

*Reference and training only. Consult current charts and the FAA AIM.*