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

S85
Local S85
BIG SKY FLD
PublicPUB

1 miles NE of CULBERTSON, MT, US
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LiveATC.net: Live Air Traffic - From Their Headsets to You
Status
Operational
Coordinates
48° 09' 13"N 104° 30' 15"W
Elevation
1953' MSL
Pattern Alt
2953' MSL
Mag Variation
8°E
Declination
13°E
Fuel
100LL
FSS
GREAT FALLS (GTF)
Sectional
BILLINGS
ARTCC
SALT LAKE CITY (ZLC)
Data Effective
7/9/26-8/6/26
KPO1 (26nm) VFR
7:40 PM MDT  
Clear
10sm
84°F
68°F
30.03"Hg
060° 8kts
AO2 TSNO
METAR KPO1 140140Z AUTO 06008KT 10SM CLR 29/20 A3003 RMK AO2 TSNO
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Weather and Advisory

AWOS-3 120.0
(406) 787-5819

Common

CTAF 122.8
ACTVT MIRL RY 08/26 & PAPI RY 26 - CTAF.
UNICOM 122.8

FAA A/FD Pages

Terminal Area Forecast

KSDY (30nm)
Mon, 7/13 5:21 PM MDT
Mon, 7/13 6:00 PM MDT - Tue, 7/14 6:00 PM MDT
VFR
6:00 PM MDT - 11:00 PM MDT
Sky Clear
6sm
030° 17kts
Gusts 26kts
VFR
11:00 PM MDT - 12:00 PM MDT
Few 18,000'
6sm
040° 11kts
Gusts 20kts
VFR
12:00 PM MDT - 6:00 PM MDT
Few 14,000'
6sm
080° 21kts
Gusts 31kts
TAF KSDY 132321Z 1400/1424 03017G26KT P6SM SKC
   FM140500 04011G20KT P6SM FEW180
   FM141800 08021G31KT P6SM FEW140
S85
EffectiveExpiresCategoryNOTAM
Domestic
7/4/26
0510Z
7/19/26
0410Z
!GTF 07/030 S85 OBST TOWER LGT (ASR 1292699) 481225.70N1043146.90W (3.4NM NNW S85) 2710.6FT (319.9FT AGL) U/S 2607040510-2607190410
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  
Good 
NONE 
MED 
 
12,000lbs 
-- 
-- 
-- 
  Runway 08 Runway 26
True Heading 90°270°
Traffic Pattern Left Left
Markings BSC BSC
Markings Condition FAIR FAIR
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.
A17-M2ON CALL ALL HOURS 406-787-6680/0660.
A70-100LLSELF SERVICE CREDIT CARD 24/7
A81-APTACTVT MIRL RY 08/26 & PAPI RY 26 - CTAF.
BIG SKY FLD (IATA: S85) is a public airport located in CULBERTSON, MT, US.