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Three Forks Airport
9S5 (Three Forks, MT)
Class G: untowered

Elevation: 4089


RwySizeTypeCond.
03/215099x60AsphaltGood


Chart Supplement (pdf version)

THREE FORKS (9S5) 1 SE UTC–7(–6DT) N45º52.69´ W111º34.17´
4089 B NOTAM FILE GTF
RWY 03–21: H5099X60 (Asphalt) S–12 MIRL

RWY 03: Runway End Identifier Lights. PAPI(P2L)—GA 3.0º TCH 25´.
RWY 21: Runway End Identifier Lights. PAPI(P2L)—GA 3.25º TCH 29´.
SERVICE: S4 FUEL 100LL LIGHTING ACTIVATE REILs Runway 03 and Runway 21; PAPI Runway 03 and Runway 21; MIRL Runway 03–21—CTAF.

AIRPORT REMARKS: Attended continuously. Fuel 24 hour credit card service available. Ultralight activity on and in the vicinity of airport. Parachute Jumping. Occasional aerobatic maneuvers in the vicinity of airport. Upon departure, all aircraft must reach 500´ altitude prior to making any turns.

AIRPORT MANAGER: 406-570-0803
COMMUNICATIONS: CTAF/AUNICOM 122.8 CLEARANCE DELIVERY PHONE: For clearance delivery contact Big Sky Approach at 208-364-5860/5861, if unable contact Salt Lake ARTCC at 801-320-2568.

RADIO AIDS TO NAVIGATION: NOTAM FILE BZN.
BOZEMAN (VH) (DH) VORW/DME 112.4 BZN Chan. 71 N45º47.03´ W111º09.33´ 270º 18.3 NM to field. 4436/18E. VOR unusable:
000º–105º beyond 20 NM
106º–180º beyond 40 NM
181º–191º beyond 40 NM below 15,000´
181º–191º beyond 56 NM below 18,000´
192º–253º beyond 40 NM
254º–264º beyond 40 NM below 9,000´
254º–264º beyond 48 NM
265º–279º beyond 40 NM
295º–314º beyond 40 NM
315º–325º beyond 40 NM below 10,000´
315º–325º beyond 49 NM
326º–359º beyond 40 NM DME unusable:
350º–105º beyond 20 NM



no instrument approaches

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Database updated: 2026/03/19

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