We would like to remind you that starting March 1st, 2024, the VATSIM United States (VATUSA) division will be conducting a trial using real-world Common Traffic Advisory Frequency (CTAF) for a period of up to 6 months. This S.O.A.R post serves as a reminder and provides general information for pilots regarding CTAF Trial.
Read in detail about CTAF trial at vats.im/ctaf-trial
Where can I find CTAF information?
Most of this information is available on the US Sectional Charts & the Chart Supplement The easiest locations to reference are the US Sectional Charts which is available in navigraph or for free at SkyVector.
In situations where multiple tower frequencies are listed on the sectional, the best resource is to review the VATSIM AIP, which will list the frequency designated as CTAF.
To read detailed explanations regarding CTAF Information, please visit the Pilot learning center > FAQ > CTAF Trial > Which Frequency to use.
How to use CTAF in VATSIM?
Pilots utilizing CTAF will quickly realize that its use is very different from communicating with air traffic control. There is nobody on the other end to give you a clearance for what you are asking. Instead, pilots broadcast their intentions in the blind to others who may be on the frequency. They will coordinate as necessary to resolve potential conflicts between aircraft.
Generally, CTAF is used within 15 nautical miles of an airport and below 5,000 ft. For larger airports such as Class Bravo airports, 20 nautical miles and 10,000 ft should be used due to increased traffic and airport complexity. This is only a general guideline and not a rule.
There are commonly many airports within a 15 nm radius, and they will generally have different CTAFs. It is important to remember that all pilots in an area will not be on the same CTAF. Additionally, CTAFs are often shared by multiple airports in the same area, due to this it is critical that you include the airport name at the beginning and end of your transmission.
NOTE: If there is a tower controller online, You will contact them normally as you do but when you are not under the control of ATC or within the suggested CTAF ranges above, you must monitor and appropriately report on the VATSIM Global CTAF, 122.800. This can include the en route, approach, and departure environments if no ATC is online.
Find detailed instructions on how to use CTAF in Pilot learning Center > CTAF Trial > How to use CTAF
Special Cases
As with any rule, there are always exceptions and special cases. Visit Pilot Learning Center > FAQ > Special cases which covers some of the more common special cases. Please reference appropriate charts for specific requirements.
