Uncontrolled Airspace
Uncontrolled airspace, also known as Class G airspace, is the portion of airspace where Air Traffic Control (ATC) services are not provided, meaning pilots are responsible for their own navigation and collision avoidance, operating under Visual Flight Rules (VFR) or Instrument Flight Rules (IFR).[1]
Here's a more detailed explanation:
Definition:
Uncontrolled airspace is the opposite of controlled airspace, where ATC actively manages and separates air traffic.
Class G Airspace:
In the United States, uncontrolled airspace is specifically designated as Class G airspace.
Location:
It's typically found below 1,200 feet AGL (above ground level) and away from busy airports, extending up to the base of the overlying Class E airspace.
Pilot Responsibility:
Pilots operating in uncontrolled airspace are responsible for their own navigation, collision avoidance, and following established flight rules (VFR or IFR).
Communication:
While ATC doesn't provide active services, pilots may use common traffic advisory frequencies (CTAF) to coordinate with other aircraft.
No ATC Clearance:
There are no entry or clearance requirements for Class G airspace, even for IFR operations.
Visual Flight Rules (VFR) Requirements:
Pilots in Class G airspace must adhere to specific VFR visibility and cloud clearance requirements, which vary based on altitude and time of day.
Examples:
Uncontrolled airspace is common around smaller airports, in rural areas, and at lower altitudes.
