Airport information
- FAA LID
- 3U8
- Coordinates
- 48.1632, -110.1157
- Elevation
- 2,700 ft MSL
- Magnetic variation
- 16E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- GREAT FALLS
- NOTAM facility
- GTF
- Attendance
- ON CALL ON CALL ON CALL
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1949/10
- Distance from city
- 1 S
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:38 AM | 10:38Z |
| Sunrise | 05:20 AM | 11:20Z |
| Sunset | 09:24 PM | 03:24Z |
| Evening civil twilight Loggable night begins | 10:06 PM | 04:06Z |
Plan a flight from 3U8
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MIRL RWY 06/24 - CTAF. on 122.9 — Chart Supplement ↗
Runway lighting aids — 06: 2-light PAPI (left) · 24: 2-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 06 · 062°
- Pattern
- left (turns left)
- TPA
- 3,500 ft MSL · 800 AGL
- CTAF
- 122.9
Enter the left downwind for Rwy 06 at 3,500 ft MSL · 800 AGL on a 45°.
Runway 06/24
3,570 ft × 60 ft · Asphalt (Excellent)- Heading
- 062° mag · 78° true
- Markings
- basic
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
- Threshold crossing height
- 30 ft
- Heading
- 242° mag · 258° true
- Markings
- basic
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Road, 15 ft, 670 ft from threshold, 0 ft L/R of centerline — 31:1 slope to clear
- Threshold crossing height
- 30 ft
Runway 13/31
2,100 ft × 100 ft · Turf (Good)- Heading
- 131° mag · 147° true
- Traffic pattern
- Left
- Approach obstacle
- Pline, 71 ft, 1,600 ft from threshold, 0 ft L/R of centerline — 22:1 slope to clear
- TDZ elevation
- 2,699 ft
- Heading
- 311° mag · 327° true
- Traffic pattern
- Left
- Approach obstacle
- Road, 15 ft, 650 ft from threshold, 0 ft L/R of centerline — 43:1 slope to clear
- TDZ elevation
- 2,699 ft
Runway 18/36
1,430 ft × 55 ft · TURF-G- Heading
- 170° mag · 186° true
- Heading
- 350° mag · 6° true
| Runway | Length | Your margin |
|---|---|---|
| 06/24 | 3,570 ft | |
| 13/31 | 2,100 ft | |
| 18/36 | 1,430 ft |
Communication frequencies
Tower & ground
| CTAF | 122.9 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| HVR · Havre | VOR-DME | 111.80 | r195° / 26.5 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns, hangars
- Other services
- Agricultural
Ownership & management
Remarks FAA
- ESTBD PRIOR TO 1959.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
- ACTVT MIRL RWY 06/24 - CTAF.
- PWR LN MKD WITH ORANGE BALLS.
Nearby airports
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 3U8 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.
About 3U8
Big Sandy Airport (3U8) is an airport in Big Sandy, MT, at 2,700 ft MSL. It has 3 runways, the longest 3,570 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 3U8, refreshed from the Aviation Weather Center and FAA NASR.
Does 3U8 have a control tower?
No. Big Sandy Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 3U8?
Big Sandy Airport has 3 runways; the longest is 3,570 ft. See the Runways tab for headings, surface, and lighting.
Where is 3U8?
Big Sandy Airport is in Big Sandy, MT, at an elevation of 2,700 ft MSL. Coordinates: 48.1632, -110.1157.
Fly out of 3U8 often?
Save 3U8 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.