Hyak Airbase Airport

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Location

Latitude: 
 44-44-08.7276N (44.735758)
Longitude: 
 112-43-10.8835W (-112.71969)
Elevation: 
 6007.0 feet MSL (1831 m MSL)
Magnetic Variation: 
 11.6 E (as of November 2026 from WMM2020 model)
Time Zone: 
 UTC -7.0 (Standard Time)
UTC -6.0 (Daylight Savings Time)
From City: 
 01 N.M. NW of Dell, Montana
Found On: 
 Great Falls Chart
FAA Region: 
 ANM

Contacts

Manager: 
Privately owned: 
SHAUNA BREWER
PO BOX 164
LIMA, MT 59739-0507
406-925-3121		 HYAK AIRBASE LLC
PO BOX 164
LIMA, MT 59739-0507
406-276-3340

Operations

Airport Status: 
 Operational
Facility Use: 
 Public
Type: 
 Airport
Activation Date: 
 02/1944
Control tower: 
 No
Attendance (Months/Days/Hours): 
 Months/Days/Hours
Unattended
Boundary ARTCC: 
 ZLC (Salt Lake City)
Responsible ARTCC: 
 ZLC (Salt Lake City)
Lighting Schedule: 
 SEE RMK
Segmented Circle Indicator: 
 No
Traffic Pattern Altitude (MSL): 
 7007 feet (2136 m)
NOTAMs Facility: 
 GTF
NOTAM-D Service: 
 Yes

Based Aircraft

Annual Operations (as of )

Communications

CTAF:  122.900

       

    Fixed Based Operators (FBOs) & Fuel

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    Area Code: 406
    Business Name Frequency Phone Fuel Grade

    Flight Service Stations

    Primary Alternate
    FSS on Field:  N
    FSS Name (ID):  Great Falls(GTF)
    Frequency: 
    Toll Free Phone:  1-800-WX-BRIEF

    Instrument Procedures / Charts

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    Navigation Aids (Navaids) near 4U9

    Navigational Aid (NAVAID) distances from the airport are listed in Nautical Miles (NM).

    Nearby Airports with Fuel

    Dist (NM) Name (Airport IDs) True Hdg Mag Hdg Fuel Grade
    32.0 Dillon Airport
    (DLN KDLN DLN)    		 12 0 100LL, Jet A, Jet A+
    54.6 Lemhi County Airport
    (SMN KSMN SMN)    		 295 283 100, Jet A
    55.8 Ennis Big Sky Airport
    (KEKS EKS)    		 54 43 100LL, Jet A-1, Jet A-1+
    64.8 Stanford Field Airport
    (U12)    		 136 125 100LL, Jet A
    65.2 Challis Airport
    (CHL KLLJ LLJ)    		 259 247 100, Jet A
    66.9 Rexburg-Madison County Airport
    (KRXE RXE)    		 143 132 100LL, Jet A
    68.4 Yellowstone Airport
    (WYS KWYS WYS)    		 91 80 100LL, Jet A-1+
    72.8 Arco-Butte County Airport
    (KAOC AOC)    		 201 189 100LL
    73.7 Bert Mooney Airport
    (BTM KBTM BTM)    		 7 355 100, 100LL, Jet A
    73.9 Rigby Airport
    (U56)    		 152 141 100LL
    78.5 Idaho Falls Regional Airport
    (IDA KIDA IDA)    		 158 147 100LL, Jet A-1
    84.0 Three Forks Airport
    (9S5)    		 34 23 100LL
    85.3 Bowman Field Airport
    (3U3)    		 355 343 100LL
    86.0 Gardiner Airport
    (29S)    		 76 65 100ll Jet A
    91.1 Bozeman Yellowstone International Airport
    (BZN KBZN BZN)    		 46 35 100, 100LL, Jet A
    91.8 Driggs/Reed Meml Airport
    (KDIJ DIJ)    		 129 118 100LL, Jet A+
    92.5 West Fork Lodge Airport
    (4U7)    		 317 305 Mogas
    93.0 Mccarley Field Airport
    (U02)    		 169 158 100LL
    99.1 Deer Lodge-City-County Airport
    (38S)    		 358 346 100LL, Jet A
    100.0 Stanley Airport
    (2U7)    		 252 240 100LL

    Notices to Airmen (NOTAMS)

    NOTAMs

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    NOTAMS within

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    NM of 4U9

    Remarks

    A110-1 SNOW REMOVAL IRREGULAR.
    A110-2 DEER ON & INVOF ARPT.
    A110-3 FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
    A110-4 AFLD SFC COND UNMONITORED.
    A110-5 LANDING FEES FOR ACFT 12500 LBS AND OVER. PPR.
    A81-APT ACTVT MIRL RY 14/32 & PAPI RY 14 - CTAF.

    Runways

    Runway Summary

    Runways: 15/33
    Longest Runway: 15/33 is 7002 ft (2134 m) long
    Runways with an Instrument Approach:

    4U9 Airport Runway Details

    Runway 15/33  7002 ft x 75 ft (2134 m x 23 m)
    Runway Length Source:  FAA as of 09/15/2026
    Surface:  Asphalt - Excellent condition - No special surface treatment

    Runway 15

    Runway 33
    Elevation: 
    		 5958.0 6007.0
    Latitude: 
    		 44-44-41.0480N 44-43-36.4073N
    Longitude: 
    		 112-43-28.0871W 112-42-53.6799W
    Runway True Alignment: 
    		 159 339
    Glide Path Angle: 
    		 0.0 degrees 0.0 degrees
    Traffic Pattern: 
    		 Left Left
    Runway Markings Type: 
    		 Basic Basic

    Services

    Airframe Repair: 
    		 None
    Powerplant Repair: 
    		 None
    Bottled Oxygen: 
    		 None
    Bulk Oxygen: 
    		 None
    Landing Fees: 
    		 No
    Parking: 
    		 Tiedowns available

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    Maps & Diagrams

    4U9 Sectional

    Flight Planning
    at skyvector.com

    4U9 Diagram


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