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BOULDER - Airport Diagram
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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)
11/27/25-12/25/25
KBTM (22nm) VFR
12:53 PM MST  
Overcast 6,000'
10sm
29°F
17°F
29.84"Hg
200° 9kts
AO2 SLP134 T10171083
METAR KBTM 181953Z AUTO 20009KT 10SM OVC060 M02/M08 A2984 RMK AO2 SLP134 T10171083
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-- 122.9

No communication frequencies available for this airport.

FAA A/FD Pages

Airport Diagrams

  • No Documents

Airport Minimums

  • No Documents

Departure Procedures

  • No Documents

Hotspot

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Standard Term. Arrival

  • No Documents

Instrument Approach

  • No Documents

Terminal Area Forecast

KBTM (22nm)
Thu, 12/18 10:24 AM MST
Thu, 12/18 11:00 AM MST - Fri, 12/19 11:00 AM MST
VFR
11:00 AM MST - 1:00 PM MST
Overcast 8,000'
6sm
200° 6kts
VFR
1:00 PM MST - 9:00 PM MST
Overcast 6,000'
6sm
190° 10kts
Gusts 16kts
VFR
9:00 PM MST - 11:00 AM MST
Showers in vicinity
Broken 5,000'
6sm
230° 12kts
Gusts 24kts
TAF KBTM 181724Z 1818/1918 20006KT P6SM OVC080
   FM182000 19010G16KT P6SM OVC060
   FM190400 23012G24KT P6SM VCSH BKN050 WS020/23035KT
3U9
EffectiveExpiresCategoryNOTAM
Domestic
12/18/25
0132Z
12/31/25
2359Z
!GTF 12/265 3U9 OBST TOWER LGT (ASR UNKNOWN) 461930.60N1120418.51W (6.6NM NNE 3U9) UNKNOWN (173FT AGL) U/S 2512180132-2512312359
12/17/25
1849Z
4/16/26
1849Z
!GTF 12/242 3U9 OBST TOWER LGT (ASR 1239631) 461627.30N1121532.70W (7.3NM WNW 3U9) 5919.9FT (210.0FT AGL) U/S 2512171849-2604161849
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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  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.