Three Forks
9S5 · Three Forks, MT · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-18 · night begins 08:02 PM
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:38 AM | 12:38Z |
| Sunrise | 07:08 AM | 13:08Z |
| Sunset | 07:32 PM | 01:32Z |
| Evening civil twilight Loggable night begins | 08:02 PM | 02:02Z |
Plan a flight from 9S5
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 21LEFT traffic
- Heading
- 204° mag · 220° true
- Dimensions
- 5,099 × 60 ft
- TPA
- 5,100 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 2-light PAPI (left) (3.25°)
- CTAF
- 122.8
Enter the left downwind (heading 024°) on the 45° at 5,100 ft MSL (≈1,000 AGL).
More details — RWY 21
- Threshold elev
- 4,081 ft
- Markings
- basic
- Threshold crossing height
- 29 ft
- TDZ elevation
- 4,087 ft
- End lights
- REIL
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 03/21 | 5,099 ft |
Prefer one flat page? Full runway details for 9S5 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 9S5 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
BZN 112.40 · HIA 113.70
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| BZN · Bozeman | VOR/DME | 112.40 · 71X | High | r270° / 18.2 NM |
| HIA · Whitehall | VOR/DME | 113.70 · 84X | High | r070° / 25.1 NM |
Prefer one flat list? All 9S5 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 9S5
- Coordinates
- 45.8781, -111.5694
- Elevation
- 4,089 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 · 122.3 · 1-800-WX-BRIEF
- NOTAM facility
- GTF
- Attendance
- ALL ALL
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1949/06
- Distance from city
- 1 SE
Activity & hazards NASR
- Parachute jumping — to 14,500 ft MSL · DAILY SR-SS
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT REILS RWY 03 & 21; PAPI RWY 03 & 21; MIRL RWY 03/21 - CTAF on 122.8 — Chart Supplement ↗
Runway lighting aids — 03: 2-light PAPI (left) · 21: 2-light PAPI (left).
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
- Fuel available
- 100LL
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Agricultural, Instruction, Parachute ops
Ownership & management 2 contacts
Remarks FAA · 6 notes
General
- OCCASIONAL AEROBATIC MANEUVERS INVOF ARPT.
- UPON DEPARTURE, ALL ACFT MUST REACH 500 FT ALTITUDE PRIOR TO MAKING ANY TURNS.
- FOR CD CTC BIG SKY APCH AT 208-364-5860/5861, IF UNABLE CTC SALT LAKE ARTCC AT 801-320-2568.
Lighting
- ACTVT REILS RWY 03 & 21; PAPI RWY 03 & 21; MIRL RWY 03/21 - CTAF
- ULTRALIGHT ACTIVITY ON & INVOF ARPT.
Fuel
- FUEL 24 HR CREDIT CARD SVC AVBL.
Nearby airports
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Also nearby: MT36 Ottertail Lake (private) (6 NM) · MT34 Ponderosa (private) (15 NM) · 2MT8 South Boulder (private) (15 NM) · 05MT Jones Landing (private) (18 NM) · 4MT1 Kreikemeier (private) (18 NM)
About 9S5
Three Forks (9S5) is an airport in Three Forks, MT, at 4,089 ft MSL. It has 1 runway, the longest 5,099 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 9S5, refreshed from the Aviation Weather Center and FAA NASR.
Does 9S5 have a control tower?
No. Three Forks is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 9S5?
Three Forks has 1 runway; the longest is 5,099 ft. See the Runways section for headings, surface, and lighting.
Where is 9S5?
Three Forks is in Three Forks, MT, at an elevation of 4,089 ft MSL. Coordinates: 45.8781, -111.5694.
More about 9S5
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 9S5 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.
Something here wrong or out of date? Report a data problem.