What is the primary function of a GA Reliever airport?

The primary function of a General Aviation (GA) Reliever airport is to alleviate congestion at nearby commercial airports by accommodating general aviation traffic. These reliever airports are strategically placed to provide services that allow private and recreational pilots to operate without adding to the air traffic and operational burdens faced by larger commercial airports.

By doing so, reliever airports help to enhance the overall efficiency of the aviation system, enabling commercial airports to focus on larger aircraft operations and passenger traffic. Terms like "general aviation" refer to all flights other than military and scheduled airline flights, which can include private planes, business jets, and training operations. The establishment of these reliever airports is thus crucial in managing airspace and ensuring smoother operations in areas experiencing high levels of air traffic.

In contrast, other options may have relevant functions within aviation but do not describe the core mission of a GA reliever airport. For example, while emergency services and pilot training can occur at these airports, they are secondary to the primary goal of reducing congestion at commercial facilities. Facilitating international flights is typically managed by major airports with customs and immigration facilities, not GA reliever airports.