Augusta, Montana
3U7 Benchmark
Benchmark (3U7) is a non-towered, public-use airport in Augusta, Montana, at 5,434 ft MSL. Its runway is 12/30 (6,000 by 100 ft, asphalt). CTAF 122.9.
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 3U7
- Location
- Augusta, Montana (Lewis and Clark County). 19 NM W of the city center
- Elevation
- 5,434 ft MSL
- Position
- 47.4820° N, 112.8723° W
- Control tower
- No, non-towered
- Sectional chart
- Great Falls
- Magnetic variation
- 18° E (1985)
- Ownership
- Publicly owned, open to the public
- Attendance
- Unattended
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 12/30 | 6,000 × 100 ft | Asphalt, poor condition | Not listed |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 12 | Left traffic | None listed | None listed | None listed | Not listed |
| 30 | Left traffic | None listed | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.9
Before you go
Brief 3U7 in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Benchmark, 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.