Three Forks Airport
9S5 · Three Forks, Montana · Gallatin County · map
Three Forks Airport is a public-use airport owned by Gallatin County, 1 mile southeast of Three Forks, Montana, 4,089 feet above sea level. Its one runway, 03/21, is 5,099 feet of asphalt. It has fuel (100LL avgas).
The airport
- Codes
- FAA 9S5
- Kind
- Airport · open to the public · publicly owned
- Owner
- Gallatin County
- Elevation
- 4,089 feet above sea level
- Control tower
- No control tower
- Attended
- around the clock
- Lights
- runway lights see the remarks below; beacon sunset to sunrise
- Fuel
- 100LL avgas
- Repairs
- airframe: major repairs; engine: major repairs
- Parking
- hangar, tiedown
- On the chart
- Great Falls sectional
- Magnetic variation
- 16E
- In the FAA's files since
- June 1949
Runway
Drawn to scale from the FAA's runway positions, north up. Not for navigation.
| Runway | Length × width | Surface | Lights |
|---|---|---|---|
| 03/21 | 5,099 × 60 ft | Asphalt, good | Medium-intensity lights |
- Runway 03: PAPI, two lights on the left
- Runway 21: PAPI, two lights on the left
Radio frequencies
| Common traffic advisory (CTAF) · UNICOM | 122.8 | · Automated UNICOM. |
Wind map live wind over the area, from Windy.com
Colours show wind speed, the moving lines its direction; drag the time bar for the coming days. Map and forecast by Windy.com.
Aircraft registered in Three Forks from the FAA register
35 aircraft are registered to owners in Three Forks, Montana: 25 piston singles, 4 weight-shift and powered parachutes, 2 turboprops, 2 helicopters, 1 piston twin. Not every one of them is based at this airport; the based-aircraft count above is the FAA's figure for this airport alone.
Companies and organisations in town with two or more aircraft:
Individuals are counted, never named. All aircraft registered in Montana.
Accidents and incidents at or near this airport NTSB records · 11 since 1982, 0 fatal
Cases the NTSB recorded with this as the nearest airport, newest first. Each opens the full report in plain English.
Nearby within 30 nautical miles
The FAA's remarks as written in the airport file
- Airport established prior to 1959.
- Activate runway end identifier lightss runway 03 and 21; PAPI runway 03 and 21; medium-intensity runway lights runway 03/21 - the common traffic frequency
- Ultralight act on and in the vicinity of airport.
- Automated UNICOM.
- Fuel 24 hour credit card service available.
- Occasional aerobatic maneuvers in the vicinity of airport.
- Upon departure, all aircraft must reach 500 feet altitude prior to making any turns.
- Use runway 21 for noise abatement winds permitting.
Facts from the FAA's airport file effective October 1, 2026, written out in plain English; weather from the National Weather Service's aviation weather service; registered aircraft from the FAA register as of October 5, 2026; accidents from the NTSB's public database. Owners are shown only when they are an organisation; no person is named. Check the official sources before a flight: this page is for understanding an airport, not for planning one.