Johnson County Airport frequencies
Johnson County Airport (6A4) in Mountain City, TN 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 Johnson County Airport — runways, frequencies, charts and live weatherBefore taxi
- ASOS/AWOS 126.225
- An automated weather station reading the field conditions aloud — wind, visibility, ceiling, temperature and altimeter. It replaces ATIS at a field with no controller to record one. Get the altimeter setting before you descend below the transition altitude.
Taxi & takeoff
- CTAF 122.7
- The common frequency pilots use to announce themselves to each other at a field with no operating control tower. Nobody is controlling traffic — you are self announcing. Report your position and intentions on entry and on each leg of the pattern, and listen well before you transmit.
- 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.
Departure & arrival Tri City
- App/Dep 134.425
- One radar controller working both arrivals and departures — normal at a smaller TRACON. The same frequency takes your climb out and your inbound call.
Also
- Flight service 125.15 (LOW)
- Flight Service handles briefings, flight plans and en route advisories, reached here through a remote outlet. Open and close VFR flight plans, and get updated weather in the air. 1-800-WX-BRIEF reaches the same specialists from the ground.
What to say on 122.7
Nobody is sequencing traffic at 6A4, 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 Johnson County Airport.
- Inbound, 10 miles out
Johnson traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 06, Johnson.
- Entering the pattern
Johnson traffic, Skyhawk one two three four five, entering left downwind runway 06, Johnson.
- Before taking the runway
Johnson traffic, Skyhawk one two three four five, departing runway 06, Johnson.
Pattern direction is not always left here — check the 6A4 traffic pattern before you announce a leg. The Chart Supplement is authoritative if 6A4 publishes a call name that differs from the airport's. Full guidance →
By procedure & sector (2 more)
| 263.0 | HICKORY RCAG (LOW) |
|---|---|
| 349.0 | APCH/P DEP/P |
Every 6A4 frequency, as one table
| ASOS/AWOS | 126.225 |
|---|---|
| CTAF | 122.7 |
| UNICOM | 122.7 |
| Flight service | 125.15 (LOW) |
| App/Dep | 134.425 |
Frequently asked
What is the CTAF at 6A4?
Johnson County Airport 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.
What is the ASOS/AWOS frequency at 6A4?
ASOS/AWOS at Johnson County Airport is 126.225. It is an automated broadcast, so there is no letter to report — just take the altimeter setting and wind.
What is the approach frequency for 6A4?
App/Dep for Johnson County Airport is 134.425, working as "Tri City". Call inbound for flight following or to begin an instrument approach.
More about 6A4
Frequencies from FAA NASR. For planning and education only; always verify against official sources.