Non-towered · Class G at the surface
Johnson County (6A4) radio calls
Mountain City, TNFAA identifier 6A4; no ICAO code assigned
Johnson County is a non-towered airport in Mountain City, TN. Nobody clears you to do anything: you self-announce on the CTAF, 122.7, as Johnson County Traffic, with the airport name at the start and end of each call. The approach control for the area is Tri City Approach on 134.425, which is who you call for VFR flight following.
No Class B, C, D or E surface area is designated for this airport in the FAA data, so the airspace at the surface is Class G.
Frequencies
| CTAFJohnson County Traffic | 122.7 |
|---|---|
| Approach / DepartureTri City Approach | 134.425 |
Airport
- Runways
- 07 · 25
- Right-hand pattern
- Runway 07
- Elevation
- 2,241 ft
- Position
- 36.418, -81.825
Non-towered airport: self-announce on the CTAF
Sample calls at 6A4
Johnson County has no operating control tower. Every call below goes out on the CTAF, 122.7, to the other aircraft, not to a controller. The runway shown is 07, which has a right-hand pattern; use whichever runway the wind and the traffic dictate on the day.
The aircraft is the AIM’s own example, Cessna Three One Six Zero Foxtrot; the squawk codes, altitudes and headings are illustrative. Frequencies, station names and runway numbers are this airport’s, from the FAA data.
- Tune 122.7. Nobody clears you; you announce and you listen. The airport name goes at the start and the end of every call, and the runway is always a number, never "the active" (AIM 4-1-9 g 8).
- YouJohnson County traffic, Cessna Three One Six Zero Foxtrot, taxiing to runway zero seven, Johnson County.
- YouJohnson County traffic, Cessna Six Zero Foxtrot, departing runway zero seven, departing the pattern to the north, Johnson County.
- Announce until you are about 10 miles out; on the way back, start announcing at 10 miles (AIM 4-1-9 c 1, TBL 4-1-1).
- YouJohnson County traffic, Cessna Three One Six Zero Foxtrot, one zero miles south, two thousand five hundred, landing Johnson County, Johnson County.
- YouJohnson County UNICOM, Cessna Six Zero Foxtrot, one zero miles south, request wind and runway information, Johnson County.
- A UNICOM operator, if one is on, answers with the wind and the runway in use (AIM 4-1-9 h). If nobody answers, choose the runway from the wind and the pattern traffic you can hear.
- YouJohnson County traffic, Cessna Six Zero Foxtrot, entering left downwind runway zero seven, full stop, Johnson County.
- YouJohnson County traffic, Cessna Six Zero Foxtrot, left base runway zero seven, Johnson County.
- YouJohnson County traffic, Cessna Six Zero Foxtrot, final runway zero seven, full stop, Johnson County.
- YouJohnson County traffic, Cessna Six Zero Foxtrot, clear of runway zero seven, Johnson County.
If things change. Want flight following after departure? Call Tri City Approach on 134.425 once clear of the pattern: identification, type, position, altitude, destination, "request VFR flight following" (AIM 4-1-18 a 3). Do not use "any traffic in the area, please advise"; the AIM says it is not to be used under any condition (AIM 4-1-9 g 1).
Phraseology from AIM 4-1-9 c 1, g 1, g 8, h; TBL 4-1-1; 4-3-3. What TowerTalk grades against →
The calls you will make here
Nearby in Tennessee
- 0A9William b Greene Jr Regionalnon-towered
- 0A4Johnson Citynon-towered
- KTRITri-Citiestowered
- KGCYGreeneville Municipalnon-towered
- KRVNHawkins Countynon-towered
- KMORMoore-Murrellnon-towered
Frequencies, runways and airspace from the FAA National Airspace System Resources (NASR) 28-day subscription, cycle effective Sep 3, 2026. Training use only. Always verify against a current Chart Supplement and sectional chart before flight; frequencies change. TowerTalk is not affiliated with the FAA. Report a discrepancy.
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