The VATSIM United States (VATUSA) division will be trialing real world Common Traffic Advisory Frequency (CTAF) starting March 1st 2024 and lasting up to 6 months. Pilots not under air traffic control will review charts and/or the VATSIM AIP to identify the correct CTAF for their airport.
What is CTAF?
Common Traffic Advisory Frequencies (CTAF) are frequencies that are used at airports without an operating control tower (also called non-towered, uncontrolled, or pilot-controlled airports) which allow pilots to coordinate amongst themselves to ensure appropriate aircraft separation. Pilots will advise other aircraft on CTAF of their position and intentions. When a part-time tower closes, the airport reverts to using CTAF.
More information from PilotInstitute
More information from Thrust Flight
How is CTAF different from UNICOM?
VATSIM has traditionally used the term UNICOM to indicate a common frequency (122.800) that all pilots are expected to utilize to coordinate intentions with other pilots. In the real world, UNICOM frequencies are used to communicate with non-ATC ground stations such as Fixed Base Operators (FBOs) at an airport. The correct terminology for the frequencies used by pilots to coordinate amongst themselves is CTAF.
Does CTAF mean I don’t have to look out for other aircraft?
No! It is important to remember that pilots in a given area will not all be on the same CTAF. It is critical to remain vigilant, use your resources, and keep your head out the window. Proper CTAF use is more important going into larger, busy airports, but it is still important to continue looking for other traffic. CTAF is a tool to coordinate with other pilots, but it does not replace a traffic scan. First priority is always to see and avoid other traffic, followed by using your tools such as ADS-B (on VATSIM this would be a map or your traffic display), third priority is CTAF.
Learn more about “how to use CTAF”, “Which Frequency to use” & “special cases” in Pilot learning Center > FAQ > CTAF Trial or visit vats.im/ctaf-trial.
