3U9

VFR

BOULDER

BOULDER · MONTANA

Elev
4,968'
Longest RWY
3,675'11/29
Tower
None
Status
Uncontrolled
Now--Z· METAR16:53Z
© Esri
Runways rendered from FAA survey · not for navExpand →
Before you fly into 3U9
Conditions
VFR
Good for visual flying
Airport
Non-towered
Self-announce on CTAF
Pattern alt
5,968'
MSL · field 4,968' + 1,000 AGL
Favored RWY
Calm
No wind component

METAR & TAF 3U9

3U9 does not publish a METAR.

Showing the nearest reporting station: KBTM (BERT MOONEY) · 22.4 NM away. Conditions at 3U9 may differ.

METAR · KBTM

Observed 16:53Z

KBTM 271653Z AUTO 00000KT 10SM SCT029 OVC036 00/M07 A2994 RMK AO2 SLP166 T00001067
Wind
000° @ 0 kt
Visibility
10 SM
Temp / Dew
0°C / -7°C
Altimeter
29.94 inHg
Clouds
OVC
Density alt
4,336 ft
Ceiling
3,600 ft AGL
Rules
VFR

Airport info & contacts

Manager on record, flight service, ARTCC, attendance schedule and pattern altitude — published by the FAA and refreshed every 28 days.

Location

From city
2 NM S
VFR sectional
GREAT FALLS
ARTCC
ZLC · SALT LAKE CITY
NOTAM facility
GTF (NOTAM-D)

Airport manager

Name
AL MARTINI
Address
PO BOX 2, BOULDER MT 59632

Flight service · Hours

FSS GTF
GREAT FALLS1-800-WX-BRIEF
Attendance
  • Unattended

Frequencies

Tap any row to copy the frequency to your clipboard.

Advisory / CTAF

Runways & pattern

Full page

Runway & wind

tap a runway
Calm
RWY 11
113°M
Head/Tail
+0 kt
Crosswind
0 kt L

Pattern entry · RWY 11

LEFT TRAFFIC
CrosswindCrosswindDownwindDownwindBaseBaseFinalFinal45° entry45° entryRWY 11 · 113° · LEFT TRAFFICPattern 5,968 ft MSL
RunwayHeading (°M)LengthSurfaceTraffic
11/29113° / 293°3,675 ftTURFStandard L

Airport sketch

Runways drawn to scale from FAA survey coordinates, rendered over live satellite imagery. Not for navigation.

© Esri

Approaches & charts

Chart Supplement
3U9 · CHART_SUPP
Can’t preview this PDF inline. Open it →

Services on the field

Fuel grades, oxygen, maintenance, ramp storage and lighting — as declared to the FAA by the airport operator.

Fuel & services

Fuel
Not available
Oxygen (bottled)
Not available
Oxygen (bulk)
Not available
Airframe repair
Not available
Power plant repair
Not available

Ramp & ground

Transient storage
  • Tie-down
Landing fee
No fee published
Customs
Not available
Wind indicator
Yes
Segmented circle
Yes

Fuel & FBOs

Cheapest 100LL and Jet A on the field and nearby. Always confirm with the FBO before taxi.

Airport notes

Surface conditions, obstructions, local procedures, lighting outages and other notes published with each FAA cycle.

General notes

  • There is no snow removal.Show FAA
  • There is a 2-foot drainage ditch and a 1-foot berm on the west side of the runway for the full length; 43 feet from runway 11/29 centerline.Show FAA
  • For clearance delivery contact Helena Approach at 406-449-5756 or 406-449-5761. When approach is closed contact Salt Lake ARTCC at 801-320-2568.Show FAA
  • There is no phone on the airport.Show FAA

Approach & departure obstructions

  • 11Runway 11/29 thresholds and edges are marked with white cones.Show FAA

Other notes

  • 11/29Runway 11/29 has a 1 percent to 3 percent uphill gradient from runway 29 end to runway 11 end.Show FAA

VFR map & nearby airports

VFR sectional. Tap any ICAO chip to open that airport.

Key facts · 3U9

Answer card
ICAO
3U9
Name
BOULDER
Location
BOULDER, MONTANA
Elevation
4,968 ft MSL
Traffic pattern altitude
5,968 ft MSL (1,000 AGL)
Control tower
Non-towered (use CTAF)
Total runways
1
Longest runway
11/29 · 3,675 ft
Published ILS approaches
0
Published frequencies
1
Magnetic variation
17°
Current flight rules
VFR
Current wind
000° at 0 kt
Favored runway now

Boulder Airport (3U9) sits in Boulder, Montana. Field elevation is 4,968 ft MSL. The airport has one runway. Runway 11/29 is 3,675 ft of turf, which is the longest runway on the field. It is a non-towered airport, so use CTAF 122.9 for local traffic calls.

No ILS approaches are published here. Pattern altitude is not published in the facts, so use standard 1,000 ft AGL for light piston operations unless the current Chart Supplement says otherwise. The runway markings use white cones for the thresholds and edges. The runway has a 1 percent to 3 percent uphill gradient from the 29 end toward the 11 end. There is also a 2-foot drainage ditch and a 1-foot berm on the west side of the runway for the full length. They sit about 43 feet from the centerline.

There are no on-field FBOs listed. There is no snow removal. For clearance delivery, contact Helena Approach at 406-449-5756 or 406-449-5761. When approach is closed, contact Salt Lake ARTCC at 801-320-2568. There is no phone on the airport, so plan your calls before you roll. This is a high-elevation turf strip with no tower and no published instrument approach support, so a first-time pilot should plan for density altitude, runway condition and the surrounding terrain before arrival.

Frequently asked questions

What is the runway length at Boulder Airport (3U9)?
3U9 has one runway. Runway 11/29 is 3,675 ft long and it is turf.
What is the field elevation at 3U9 Boulder Airport?
Field elevation is 4,968 ft MSL. That matters for performance planning because density altitude can climb fast at this elevation.
Does Boulder Airport have a tower?
No. Boulder Airport is non-towered, so use CTAF 122.9 for position reports and traffic awareness.
Are there any ILS approaches at 3U9?
No ILS approaches are published for 3U9. Check the current Chart Supplement for the latest approach information before you go.
What is the pattern altitude at Boulder Airport?
The facts do not publish a pattern altitude for 3U9. Use standard 1,000 ft AGL for light piston operations unless the current Chart Supplement says otherwise.
What should I know about runway 11/29 at 3U9?
Runway 11/29 has white cone markings at the thresholds and edges. It also has a 1 percent to 3 percent uphill gradient from the 29 end toward the 11 end.
Are there any on-field FBOs at Boulder Airport?
No on-field FBOs are listed in the facts. Contact the airport operator directly before arrival, or call the field on CTAF/UNICOM for current FBO availability.
Are there any special hazards at Boulder Airport?
Yes. The west side of the runway has a drainage ditch and berm for the full length. They sit about 43 feet from the runway centerline, so stay centered and plan your rollout carefully.

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