Class G (Golf) airspace is the only "uncontrolled" airspace in the United States, meaning Air Traffic Control (ATC) does not have the authority or responsibility to manage traffic within it. The primary requirement for pilots is to adhere to specific VFR (Visual Flight Rules) weather minimums, which vary by altitude and time of day. For example, when flying below 1,200 feet AGL during the day, pilots must remain clear of clouds and have at least 1 mile of visibility. Above 1,200 feet AGL but below 10,000 feet MSL, the requirement increases to 1 mile visibility and maintaining specific distances from clouds (500' below, 1,000' above, 2,000' horizontal). There is no requirement for radio communication or a transponder when flying below 10,000 feet MSL, although pilots are encouraged to broadcast their intentions on a Common Traffic Advisory Frequency (CTAF) when near uncontrolled airports. For drone pilots, the FAA requires staying within visual line of sight and following Part 107 rules, though no prior ATC authorization is needed for Class G flight.