Mountain City, Tennessee
6A4 Johnson County
Johnson County (6A4) is a non-towered, public-use airport in Mountain City, Tennessee, at 2,241.1 ft MSL. Its runway is 07/25 (4,498 by 75 ft, asphalt). Right traffic for runway 07. CTAF 122.7.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- FAA 6A4
- Location
- Mountain City, Tennessee (Johnson County). 4 NM S of the city center
- Elevation
- 2,241.1 ft MSL
- Position
- 36.4178° N, 81.8251° W
- Control tower
- No, non-towered
- Sectional chart
- Cincinnati
- Magnetic variation
- 7° W (2010)
- Fuel
- 100LL, Jet A+
- Ownership
- Publicly owned, open to the public
- Attendance
- Daily 0900-1800
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 07/25 | 4,498 × 75 ft | Asphalt, good condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 07 | Right traffic | 2-light PAPI, left | None listed | None listed | Not listed |
| 25 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.7
- Actvt Papi Rwy 07 & 25; Mirl Rwy 07/25 - Ctaf.
- UNICOM
- 122.7
- Approach / departure
- 134.425
- "Tri City"
Weather station
- AWOS-3 6A4
- 126.225
Before you go
Brief 6A4 in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Johnson County, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.