Four Pillars frequencies
Four Pillars (AZ21) in Huachuca City/Tombstone, AZ has no control tower, so nobody is sequencing traffic here — you announce your own position on 122.7. Every frequency below is in the order you tune it. · Open on the map
All of Four Pillars — runways, frequencies, charts and live weatherTaxi & takeoff
- UNICOM 122.7
- A ground station run by the FBO rather than the FAA, for fuel, parking and airport services. Use it for services. Where the field has no separate CTAF, the same frequency doubles as the advisory frequency.
What to say on 122.7
Nobody is sequencing traffic at AZ21, so every call is you telling other aircraft where you are. Open and close with the field name so a pilot tuned to a shared frequency knows which airport you mean — 122.7 is not unique to Four Pillars.
- Inbound, 10 miles out
Four Pillars traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 17, Four Pillars.
- Entering the pattern
Four Pillars traffic, Skyhawk one two three four five, entering left downwind runway 17, Four Pillars.
- Before taking the runway
Four Pillars traffic, Skyhawk one two three four five, departing runway 17, Four Pillars.
Pattern direction is not always left here — check the AZ21 traffic pattern before you announce a leg. The Chart Supplement is authoritative if AZ21 publishes a call name that differs from the airport's. Full guidance →
Every AZ21 frequency, as one table
| UNICOM | 122.7 |
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Frequently asked
What is the CTAF at AZ21?
Four Pillars is non towered. The common traffic advisory frequency is 122.7 — announce your position and intentions on entry and on each leg of the pattern.
More about AZ21
Frequencies from FAA NASR. For planning and education only; always verify against official sources.
Something here wrong or out of date? Report a data problem.