What is the primary function of a UNICOM frequency?

The primary function of a UNICOM frequency is to connect pilots with ground services and other pilots. UNICOM is a non-governmental, commonly used frequency at airports without an operating control tower. It allows for the coordination of essential communications among pilots, ground personnel, and service providers. This facilitates the efficient management of flight operations, including taxiing, fueling, and other ground services.

In addition, it enables pilots to share important information with each other, such as conditions on the runway or in-flight activities, which enhances safety and efficiency in non-towered environments. The communication on a UNICOM frequency is not used for air traffic control nor military communications, and it does not typically relay messages for non-towered airports, emphasizing its primary role as a tool for direct pilot-to-pilot and pilot-to-ground communication.