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M46 Colstrip Airport
Colstrip, Montana, USA

GOING TO COLSTRIP?

FAA INFORMATION EFFECTIVE 27 NOVEMBER 2025

Location

FAA Identifier: M46
Lat/Long: 45-51-10.2000N 106-42-33.4000W
45-51.170000N 106-42.556667W
45.8528333,-106.7092778
(estimated)
Elevation: 3427.6 ft. / 1044.7 m (surveyed)
Variation: 13E (1995)
From city: 3 miles SW of COLSTRIP, MT
Time zone: UTC -7 (UTC -6 during Daylight Saving Time)
Zip code: 59327

Airport Operations

Airport use: Open to the public
Activation date: 11/1990
Control tower: no
ARTCC: SALT LAKE CITY CENTER
FSS: GREAT FALLS FLIGHT SERVICE STATION
NOTAMs facility: GTF (NOTAM-D service available)
Attendance: ON CALL
Wind indicator: lighted
Segmented circle: yes
Lights: ACTVT PAPI 06 & 24 - CTAF; MIRL RWY 06/24 PRESET LOW INTST DUSK-0100; AFT 0100 ACTVT - CTAF.
Beacon: white-green (lighted land airport)
Operates sunset to sunrise.

Airport Communications

CTAF/UNICOM: 122.7
WX AWOS-3PT: 118.525 (406-748-3849)
  • APCH/DEP CTL SVC PRVDD BY SALT LAKE ARTCC (ZLC) ON 126.85/305.2 (MILES CITY RCAG).

Airport Services

Parking: tiedowns

Runway Information

Runway 6/24

Dimensions: 5100 x 75 ft. / 1554 x 23 m
Surface: asphalt, in good condition
Weight bearing capacity: 
Single wheel: 12.5
Runway edge lights: medium intensity
RUNWAY 6  RUNWAY 24
Latitude: 45-51.059097N45-51.282418N
Longitude: 106-43.135147W106-41.977775W
Elevation: 3427.6 ft.3383.4 ft.
Traffic pattern: leftleft
Runway heading: 062 magnetic, 075 true242 magnetic, 255 true
Markings: nonprecision, in good conditionnonprecision, in good condition
Visual slope indicator: 2-light PAPI on left (3.00 degrees glide path)2-light PAPI on left (3.00 degrees glide path)
Touchdown point: yes, no lightsyes, no lights

Airport Ownership and Management from official FAA records

Ownership: Publicly-owned
Owner: COUNTY OF ROSEBUD
PO BOX 47
FORSYTH, MT 59327
Phone 406-346-2251
Manager: BRIAN SCHWEND
PO BOX 45
FORSYTH, MT 59327
Phone 406-351-1261

Additional Remarks

- HILL 1550' FM RY 24 END 600' LEFT & 93' ABOVE RY THR.
- 700 FT POWER PLANT STACKS 4.5 NM NE OF ARPT.
- PHONE AVAIL ON ARPT.
- COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -34C.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.

Instrument Procedures

NOTE: All procedures below are presented as PDF files. If you need a reader for these files, you should download the free Adobe Reader.

NOT FOR NAVIGATION. Please procure official charts for flight.
FAA instrument procedures published for use from 27 November 2025 at 0901Z to 25 December 2025 at 0900Z.
 
IAPs - Instrument Approach Procedures
GPS RWY 06   download (192KB)
GPS RWY 24   download (192KB)
 
CISPU ONE (OBSTACLE) (RNAV)   download (127KB)
CONUK ONE (OBSTACLE) (RNAV)   download (122KB)
NOTE: Special Take-Off Minimums/Departure Procedures apply   download (223KB)

Other nearby airports with instrument procedures:

1S3 - Tillitt Field Airport (25 nm N)
00U - Big Horn County Airport (40 nm W)
KMLS - Frank Wiley Field Airport (48 nm NE)
KSHR - Sheridan County Airport (66 nm S)
KBIL - Billings Logan International Airport (77 nm W)
  
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Area around M46 (Colstrip Airport)
 
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Aerial photo
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Aerial photo of M46 (Colstrip Airport)
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Sectional chart

 
Airport distance calculator
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From to M46

Sunrise and sunset
Times for 11-Dec-2025
 Local
(UTC-7)		 Zulu
(UTC)
Morning civil twilight07:0514:05
Sunrise07:3914:39
Sunset16:2123:21
Evening civil twilight16:5523:55

Current date and time
Zulu (UTC)  11-Dec-2025 15:07:40
Local (UTC-7)  11-Dec-2025 08:07:40
 
METAR
TAF
KMLS 
49nm NE 		111134Z 1112/1212 VRB06KT P6SM VCFG FEW004 SCT020 BKN060 WS020/30038KT FM111300 VRB06KT 4SM BR SCT005 OVC035 WS020/30042KT FM111600 03012KT 2SM -SN BR SCT005 OVC015 PROB30 1118/1124 2SM -SN FZFG OVC010 FM120000 35020KT 3SM -SN BR OVC010
NOTAMs
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NOTAMs are issued by the DoD/FAA and will open in a separate window not controlled by AirNav.

 

 
 

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