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BIG SKY FLD - Airport Diagram
LiveATC.net: Live Air Traffic - From Their Headsets to You

S85
BIG SKY FLD
PublicPUB

1 miles NE of CULBERTSON, MT
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LiveATC.net: Live Air Traffic - From Their Headsets to You
Operational
48° 09' 13"N 104° 30' 15"W
1953' MSL
2953' MSL
13E
100LL
GREAT FALLS (GTF)
BILLINGS
SALT LAKE CITY (ZLC)
11/27/25-12/25/25
KPO1 (26nm) VFR
9:15 AM MST  
Few 9,000'
10sm
30°F
30°F
29.19"Hg
Calm
AO2 TSNO
METAR KPO1 171615Z AUTO 00000KT 10SM FEW090 M01/M01 A2919 RMK AO2 TSNO
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122.8 122.8

AWOS-3

AWOS-3
406-787-5819
 120.0

FAA A/FD Pages

Airport Diagrams

  • No Documents

Airport Minimums

  • No Documents

Departure Procedures

  • No Documents

Hotspot

  • No Documents

Standard Term. Arrival

  • No Documents

Instrument Approach

  • No Documents

Terminal Area Forecast

KSDY (30nm)
Wed, 12/17 4:20 AM MST
Wed, 12/17 5:00 AM MST - Thu, 12/18 5:00 AM MST
VFR
5:00 AM MST - 12:00 PM MST
Scattered 8,000'
6sm
200° 12kts
VFR
9:00 AM MST - 12:00 PM MST
Light Rain
Overcast 4,000'
6sm
Calm
VFR
12:00 PM MST - 2:00 PM MST
Light Rain
Overcast 7,000'
6sm
220° 18kts
Gusts 32kts
VFR
2:00 PM MST - 8:00 PM MST
Broken 4,000'
6sm
250° 24kts
Gusts 41kts
MVFR
7:00 PM MST - 8:00 PM MST
Light Snow and Blowing Snow
No Clouds
4sm
Calm
LIFR
8:00 PM MST - 2:00 AM MST
Snow and Blowing Snow
Overcast 2,500'
0.5sm
280° 35kts
Gusts 54kts
IFR
2:00 AM MST - 5:00 AM MST
Light Snow and Blowing Snow
Overcast 1,500'
1sm
330° 28kts
Gusts 42kts
TAF KSDY 171120Z 1712/1812 20012KT P6SM SCT080
   PROB30 1716/1719 6SM -RA OVC040
   FM171900 22018G32KT 6SM -RA OVC070
   FM172100 25024G41KT P6SM BKN040
   PROB30 1802/1803 4SM -SN BLSN
   FM180300 28035G54KT 1/2SM SN BLSN OVC025 WS020/29070KT
   FM180900 33028G42KT 1SM -SN BLSN OVC015 AMD NOT SKED
S85
EffectiveExpiresCategoryNOTAM
Domestic
12/9/25
0536Z
12/24/25
0436Z
!GTF 12/137 S85 OBST TOWER LGT (ASR 1292699) 481225.70N1043146.90W (3.4NM NNW S85) 2710.6FT (319.9FT AGL) U/S 2512090536-2512240436
No
UNATNDD
ON CALL ALL HOURS 406-787-6680/0660.
ROOSEVELT COUNTY & CITY
210 BROADWAY
CULBERTSON, MT 59218
Phone: 406-787-5271
ROBERT JASPER
BOX 351
CULBERTSON, MT 59218
Phone: 406-787-5271
GREAT FALLS FSS (GTF)
Toll Free: 1-800-WX-BRIEF
GTF
--
ACTVT MIRL RY 08/26 & PAPI RY 26 - CTAF.
N/A
Yes - Lighted
Yes
No
Tie-Down
NOT a Landing Rights Airport
NOT an Airport of Entry
None
None
None
None
Crop Dusting
Air Ambulance
Annual Surveying

Runway 08/26

3800 ft. x 60 ft.
ASPH  
Excellent 
NONE 
MED 
 
12,000lbs 
-- 
-- 
-- 
  Runway 08 Runway 26
True Heading 90°270°
Traffic Pattern Left Left
Markings BSC BSC
Markings Condition GOOD GOOD
Latitude 48° 09' 13"N 48° 09' 13"N
Longitude 104° 30' 43"W 104° 29' 47"W
Elevation 1,953' 1,934'
Threshold Crossing Height -- 27 ft. AGL
Visual Glide Path Angle -- 3°
Visual Slope Indicator -- P2L
Approach Lights
Centerline Lights
Runway End Identifier Lights
A110-1FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
A110-22,876 FT TWRS 3.5 MIS NW.
BIG SKY FLD (IATA: S85) is a public airport located in CULBERTSON, MT.