NW 90 · Northwest

H6010X75 (ASPH) S–39, D–55 PCR 150 F/D/X/T MIRL 0.6% up S

PAPI(P2L)—GA 3.0º TCH 40´.

PAPI(P2L)—GA 3.0º TCH 40´. Rgt tfc.

H4074X60 (ASPH) S–18, D–25 MIRL 1.0% up SW

PAPI(P2L)—GA 3.25º TCH 44´.

PAPI(P2L)—GA 3.0º TCH 22´.

FUEL 100LL LGT ACTVT PAPI Rwy 04, 17, 22 and 35; MIRL Rwy 04–22 and 17–35—CTAF.

Unattended. Conds unmonitored 0000–1500Z‡. Call amgr for current rwy conds. Rotg bcn lctd midway of Rwy 04–22 and offset 700´ SE of cntrln. Cold temperature airport. Altitude correction required at or below –25C. Phone on fld. Unlgtd hazardous stack 585´ AGL lctd 3.2 NM southwest of arpt.

406-490-3627

AWOS–3PT 124.175 (406) 563–8275.

For CD ctc Salt Lake ARTCC at 801-320-2568.

NOTAM FILE BTM. COPPERTOWN (VL) (L) VORW/DME 116.05 CPN Chan 107(Y) N46º01.92´ W112º44.85´ 309º 8.8 NM to fld. 5780/16E. VOR unusable: 105º–292º byd 40 NM 125º–135º byd 30 NM blo 15,000´ 160º–270º byd 24 NM blo 17,000´ 293º–303º byd 40 NM blo 13,000´ 293º–303º byd 46 NM 304º–327º byd 40 NM 351º–080º byd 20 NM blo 15,000´ 355º–098º byd 40 NM DME unusable: 025º–050º byd 30 NM 051º–100º byd 30 NM blo 15,000´ 125º–135º byd 30 NM blo 15,000´ 160º–269º byd 24 NM 270º–290º byd 24 NM blo 17,000´ 291º–314º byd 25 NM blo 13,000´ 315º–325º byd 25 NM blo 15,000´ 326º–345º byd 25 NM blo 13,000´ 351º–024º byd 30 NM blo 15,000´

3830X95 (GRVL–DIRT)

Tree.

Tree.

Unattended. Vehicles and horses invof rwy. 100´ lgtd antenna 1/2 mile SW of arpt on hill. Rwy 13–31 muddy when wet. Rwy 13–31 1´ to 2´ dirt berm on edge of rwy and thlds.

406-784-4965

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