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3U9
BOULDER
PublicPUB

2 miles S of BOULDER, MT
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LiveATC.net: Live Air Traffic - From Their Headsets to You
Operational
46° 12' 42"N 112° 06' 27"W
4968' MSL
5968' MSL
17E
None Listed
GREAT FALLS (GTF)
GREAT FALLS
SALT LAKE CITY (ZLC)
4/17/25-5/15/25
KBTM (22nm) MVFR
4:53 AM MDT  
Overcast 1,500'
10sm
31°F
26°F
30.02"Hg
160° 11kts
AO2 SLP189 T10061033
METAR KBTM 141053Z AUTO 16011KT 10SM OVC015 M01/M03 A3002 RMK AO2 SLP189 T10061033
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-- 122.9

No communication frequencies available for this airport.

FAA A/FD Pages

Airport Diagrams

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Departure Procedures

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Hotspot

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Standard Term. Arrival

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Instrument Approach

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Terminal Area Forecast

KBTM (22nm)
Mon, 10/13 11:21 PM MDT
Tue, 10/14 12:00 AM MDT - Wed, 10/15 12:00 AM MDT
IFR
4:00 PM MDT - 6:00 PM MDT
Light Showers and Snow
Overcast 2,000'
1sm
Calm
VFR
12:00 PM MDT - 12:00 AM MDT
Showers in vicinity
Broken 4,000'
Broken 3,500'
6sm
150° 6kts
IFR
9:00 AM MDT - 12:00 PM MDT
Light Snow
Overcast 1,300'
1sm
VRB° 2kts
IFR
Temporary 6:00 AM MDT - 9:00 AM MDT
Light Snow and Mist
Overcast 800'
3sm
Calm
MVFR
3:00 AM MDT - 6:00 AM MDT
Mist
Broken 1,200'
5sm
090° 5kts
MVFR
12:00 AM MDT - 3:00 AM MDT
Overcast 1,600'
6sm
160° 6kts
MVFR
6:00 AM MDT - 9:00 AM MDT
Light Snow
Overcast 1,300'
6sm
VRB° 2kts
TAF KBTM 140521Z 1406/1506 16006KT P6SM OVC016
   FM140900 09005KT 5SM BR BKN012
   FM141200 VRB02KT 6SM -SN OVC013
   TEMPO 1412/1415 3SM -SN BR OVC008
   FM141500 VRB02KT 1SM -SN OVC013
   FM141800 15006KT P6SM VCSH BKN035 BKN040
   PROB30 1422/1424 1SM -SHSN OVC020
3U9
EffectiveExpiresCategoryNOTAM
Domestic
10/4/25
0149Z
2/1/26
0149Z
!GTF 10/028 3U9 OBST TOWER LGT (ASR 1239631) 461627.30N1121532.70W (7.3NM WNW 3U9) 5919.9FT (210.0FT AGL) U/S 2510040149-2602010149
No
UNATNDD
TWN OF BOULDER & JEFFERSON CO
COUNTY COURTHOUSE BOX H
BOULDER, MT 59632
Phone: 406-225-4025
AL MARTINI
PO BOX 2
BOULDER, MT 59632
Phone: (406) 431-7519
GREAT FALLS FSS (GTF)
Toll Free: 1-800-WX-BRIEF
GTF
--
--
N/A
Yes
Yes
No
Tie-Down
NOT a Landing Rights Airport
NOT an Airport of Entry
None
None
None
None
None

Runway 11/29

3675 ft. x 72 ft.
TURF  
Fair 
NONE 
 
 
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-- 
-- 
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  Runway 11 Runway 29
True Heading 130°310°
Traffic Pattern Left
Markings NSTD NSTD
Markings Condition GOOD GOOD
Latitude 46° 12' 54"N 46° 12' 30"N
Longitude 112° 06' 47"W 112° 06' 07"W
Elevation 4,968' 4,910'
Threshold Crossing Height -- --
Visual Glide Path Angle -- --
Visual Slope Indicator -- --
Approach Lights
Centerline Lights
Runway End Identifier Lights
A110-1NO SNOW REMOVAL
A110-2NO PHONE ON AIRPORT.
A110-3-2 FT DRAINAGE DITCH +1 FT BERM WEST SIDE OF RY FULL LENGTH; 43 FT FM RY 11/29 CNTRLN.
A110-4FOR CD CTC HELENA APCH AT 406-449-5756/5761, WHEN APCH CLSD CTC SALT LAKE ARTCC AT 801-320-2568.
BOULDER (IATA: 3U9) is a public airport located in BOULDER, MT.