NW 148 · Northwest

Cycle 03SEP2026 · 0 airports · 472 words · FAA Chart Supplement, verbatim

148 MONTANA

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YELLOWSTONE SPB (8M3)

13 NW UTC–7(–6DT) N44º49.80´ W111º17.25´ 6534 NOTAM FILE

WATERWAY 13W–31W:

12007X3000 (WATER)

SEAPLANE REMARKS:

No docking lctn avbl.

AIRPORT MANAGER:

406-208-3004

COMMUNICATIONS:

CTAF/

UNICOM 123.0 WEST YELLOWSTONE N44º40.55´ W111º07.69´ NOTAM FILE GTF. (DH) DME 114.85 WYS Chan 95(Y) at Yellowstone. 6648. DME unusable: 029º–055º blo 18,000´ 090º–360º blo 18,000´ 285º–290º byd 35 NM blo 24,000´ WHEATLAND CO AT HARLOWTON (See HARLOWTON on page 116) WHETSTONE INTL (See PORT OF DEL BONITA on page 134)

WHITE SULPHUR SPRINGS (7S6)

3 S UTC–7(–6DT) N46º29.73´ W110º54.72´ 5065 B NOTAM FILE GTF

RWY 01–19:

H6100X75 (ASPH) S–34.5, D–48.5 PCR 130 F/D/X/T MIRL

RWY 01:

PAPI(P2L)—GA 3.0º TCH 39´.

RWY 19:

PAPI(P2L)—GA 3.0º TCH 35´.

RWY 13–31:

2999X90 (TURF) 1.2% up SE

SERVICE:

FUEL 100LL LGT ACTIVATE MIRL Rwy 01–19 and PAPI Rwy 01 and Rwy 19—CTAF.

AIRPORT REMARKS:

Unattended. Arpt clsd to helicopter ops over 5,000 lbs exc in designated fire fighting parking area. Antelope and birds freq on and invof arpt. Irrigation twrs AER 13. Rwy 13–31 no cones marking rwy edge, only cones on rwy ends.

AIRPORT MANAGER:

406-261-4556

WEATHER DATA SOURCES:

AWOS–3PT 118.525 (406) 547–3511.

COMMUNICATIONS:

CTAF 122.9 ®SALT

LAKE CENTER APP/DEP CON 133.4

CLEARANCE DELIVERY PHONE:

For CD ctc 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´ 355º 43.9 NM to fld. 4436/18E. VOR unusable: 000º–105º byd 20 NM 106º–180º byd 40 NM 181º–191º byd 40 NM blo 15,000´ 181º–191º byd 56 NM blo 18,000´ 192º–253º byd 40 NM 254º–264º byd 40 NM blo 9,000´ 254º–264º byd 48 NM 265º–279º byd 40 NM 295º–314º byd 40 NM 315º–325º byd 40 NM blo 10,000´ 315º–325º byd 49 NM 326º–359º byd 40 NM DME unusable: 350º–105º byd 20

NM WHITEFISH (58S)

1 E UTC–7(–6DT) N48º24.48´ W114º17.97´ 3066 NOTAM FILE GTF

RWY 11–29:

2560X75 (TURF)

RWY 11:

Thld dsplcd 278´. Trees.

RWY 29:

Trees.

AIRPORT REMARKS:

Unattended. Arpt sfc cond unmon, call amgr or lcl ctc for current conds 406–444–2506, lcl ctc 406–261–4385, or 303–918–9042. Rwy 11–29 trees, railroad, and p–lines in trsnl sfc full rwy length on N side. May be gopher holes or ireg sfc. Rwy 11 and Rwy 29 marked with w cones. Calm wind use Rwy 11, minimize pattern work.

AIRPORT MANAGER:

406-444-2506

COMMUNICATIONS:

CTAF 122.9

CLEARANCE DELIVERY PHONE:

For CD ctc Salt Lake ARTCC at 801-320-2568. GREAT FALLS GREAT FALLS L–13C GREAT FALLS H–1E, L–13C IAP GREAT FALLS NW, 3 SEP 2026 to 29 OCT 2026