Benchmark Airport
3U7 · Augusta, MT · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 09:37 PM
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:37 AM | 11:37Z |
| Sunrise | 06:13 AM | 12:13Z |
| Sunset | 09:01 PM | 03:01Z |
| Evening civil twilight Loggable night begins | 09:37 PM | 03:37Z |
Plan a flight from 3U7
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 12LEFT traffic
- Heading
- 122° mag · 140° true
- Dimensions
- 6,000 × 100 ft
- TPA
- 6,400 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- CTAF
- 122.9
Enter the left downwind (heading 302°) on the 45° at 6,400 ft MSL (≈1,000 AGL).
More details — RWY 12
- Threshold elev
- 5,316 ft
- Markings
- basic
- Approach obstacle
- Trees, 39 ft, 372 ft from threshold, 0 ft B of centerline — 4:1 slope to clear · penetrates the 20:1 visual approach surface
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 12/30 | 6,000 ft |
Prefer one flat page? Full runway details for 3U7 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 3U7 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Prefer one flat list? All 3U7 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 3U7
- Coordinates
- 47.4809, -112.8709
- Elevation
- 5,434 ft MSL
- Magnetic variation
- 18E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- GREAT FALLS · 122.3 · 1-800-WX-BRIEF
- NOTAM facility
- GTF
- Attendance
- UNATNDD
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1965/03
- Distance from city
- 19 W
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Parking
- tiedowns
Ownership & management 2 contacts
Remarks FAA · 12 notes
General
- SNOW REMOVAL NA.
- MTS PARL E & W; IN TRSN SFC.
- SVCS NA.
- FONE NA; CABIN 1 MI NW.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
Runways
- PSBL MOD-SVR CROSSWIND & TURB.
- RISES UPHILL 120 FT; RISING TRRN BYD.
- RCMDD DEP COND PMTG.
- LRG CRACKS & WEEDS FULL LEN.
Obstructions
- +58 FT TREES ON CNTRLN.
- +250 FT TREES ON CNTRLN.
- 33:1 TO THR. +65 FT TREES 0-150 FT R 2150 FT FM RWY END.
Nearby airports
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Also nearby: 0MT1 Williams Field (19 NM) · 3U5 Augusta Airport (20 NM) · MT39 Black Canyon Ranch Airport (private) (29 NM) · 23S Seeley Lake Airport (30 NM) · 42MT Crown Ranch Airpark (private) (31 NM) · 0S1 Meadow Creek USFS Airport (31 NM)
About 3U7
Benchmark Airport (3U7) is an airport in Augusta, MT, at 5,434 ft MSL. It has 1 runway, the longest 6,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 3U7, refreshed from the Aviation Weather Center and FAA NASR.
Does 3U7 have a control tower?
No. Benchmark Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 3U7?
Benchmark Airport has 1 runway; the longest is 6,000 ft. See the Runways section for headings, surface, and lighting.
Where is 3U7?
Benchmark Airport is in Augusta, MT, at an elevation of 5,434 ft MSL. Coordinates: 47.4809, -112.8709.
Fly out of 3U7 often?
Save 3U7 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 3U7 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.