Maddox Ranch Co Airport Private
3MT4 · Chinook, MT · 2,589 ft elevation · var 16E · Non-towered
Airport information
- FAA LID
- 3MT4
- Coordinates
- 48.5134, -109.0653
- Elevation
- 2,589 ft MSL
- Magnetic variation
- 16E
- Sectional chart
- GREAT FALLS
- Airport use
- Private
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- GREAT FALLS
- Attendance
- ALL ALL
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1965/03
- Distance from city
- 8 SE
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 | 04:32 AM | 10:32Z |
| Sunrise | 05:14 AM | 11:14Z |
| Sunset | 09:22 PM | 03:22Z |
| Evening civil twilight Loggable night begins | 10:04 PM | 04:04Z |
Plan a flight from 3MT4
Night operations
- Airport lighting
- SS-SR
- Pilot-controlled lighting
- Usually keyed on CTAF 122.8 — confirm the click sequence in the Chart Supplement
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 04
- Pattern
- left (turns left)
- TPA
- 3,600 ft MSL (≈1,000 AGL)
- CTAF
- 122.8
Enter the left downwind for Rwy 04 at 3,600 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 04/22
3,650 ft · TURF-GRVL-F- Heading
- n/a
- Heading
- n/a
Runway 11/29
2,254 ft · TURF-F- Heading
- n/a
- Heading
- n/a
| Runway | Length | Your margin |
|---|---|---|
| 04/22 | 3,650 ft | |
| 11/29 | 2,254 ft |
Communication frequencies
Tower & ground
| CTAF | 122.8 |
| UNICOM | 122.8 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| HVR · Havre | VOR-DME | 111.80 | r077° / 28.1 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 3MT4. VFR sectional link above.
Services
- Fuel available
- 100LL
- Bottled oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns
- Other services
- Agricultural, Instruction
Ownership & management
Remarks FAA
- RY 11 HAS ABRUPT GULLEY 20 FT FM END OF RY.
- RY 04 LARGE 8 FT DEEP SINKHOLE IN RGT SIDE OF RY 400 FT FM THLD.
- RY 29 DIRT ROAD CROSSES RY 300 FT BYD THLD.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
- RWY 04/22 LED AND REFLECTORS.
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 3MT4 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 3MT4
Maddox Ranch Co Airport (3MT4) is an airport in Chinook, MT, at 2,589 ft MSL. It has 2 runways, the longest 3,650 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 3MT4, refreshed from the Aviation Weather Center and FAA NASR.
Does 3MT4 have a control tower?
No. Maddox Ranch Co Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 3MT4?
Maddox Ranch Co Airport has 2 runways; the longest is 3,650 ft. See the Runways tab for headings, surface, and lighting.
Where is 3MT4?
Maddox Ranch Co Airport is in Chinook, MT, at an elevation of 2,589 ft MSL. Coordinates: 48.5134, -109.0653.
Fly out of 3MT4 often?
Save 3MT4 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.