Brown Cabin Seaplane Base

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Location

Latitude: 
 48-02-17.0000N (48.038056)
Longitude: 
 115-05-29.0000W (-115.091389)
Elevation: 
 3340.0 feet MSL (1018 m MSL)
Magnetic Variation: 
 13.2 E (as of December 2025 from WMM2020 model)
Time Zone: 
 UTC -7.0 (Standard Time)
UTC -6.0 (Daylight Savings Time)
From City: 
 28 N.M. SE of Libby, Montana
Found On: 
 Great Falls Chart
FAA Region: 
 ANM

Contacts

Manager: 
Privately owned: 
PERRY BROWN
1325 SOUTH NUCLEUS AVE
COLUMBIA FALLS, MT 59912
406-249-3637		 PERRY BROWN
1325 SOUTH NUCLEUS AVE
COLUMBIA FALLS, MT 59912
406-249-3637

Operations

Airport Status: 
 Operational
Facility Use: 
 Private
Type: 
 Seaplane Base
Activation Date: 
 05/2020
Control tower: 
 No
Boundary ARTCC: 
 ZSE (Seattle)
Responsible ARTCC: 
 ZSE (Seattle)
Traffic Pattern Altitude (MSL): 
 4340 feet (1323 m)

Based Aircraft

Annual Operations (as of )

Communications

       

    Fixed Based Operators (FBOs) & Fuel

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    Flight Service Stations

    Primary Alternate
    FSS on Field: 
    FSS Name (ID):  Columbus(OLU)
    Frequency: 
    Toll Free Phone:  1-800-WX-BRIEF

    Instrument Procedures / Charts

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    Navigation Aids (Navaids) near 6MT4

    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
    21.7 Libby Airport
    (S59)    		 312 299 100LL, Jet A
    28.9 Thompson Falls Airport
    (KTHM THM)    		 195 182 100LL
    32.7 Kalispell City Airport
    (S27)    		 74 61 100LL, Jet A
    37.2 Glacier Park International Airport
    (FCA KGPI GPI)    		 63 50 100LL, Jet A
    41.9 Polson Airport
    (8S1)    		 119 106 100LL, Jet A+
    48.9 Ronan Airport
    (7S0)    		 124 111 100LL, Jet A+
    53.1 Shoshone County Airport
    (S83)    		 236 223 100LL
    55.8 Eureka Airport
    (88M)    		 0 347 100LL
    60.8 Sandpoint Airport
    (KSZT SZT)    		 285 271 100LL, Jet A
    63.3 Boundary County Airport
    (65S)    		 311 297 100LL, Jet A
    71.3 Coeur D'alene/Pappy Boyington Field Airport
    (COE KCOE COE)    		 257 243 100, Jet A
    71.7 Brooks Seaplane Base
    (S76)    		 252 238 100LL
    73.7 Jack A Buell Airport
    (S72)    		 235 221 100LL
    78.6 Missoula Montana Airport
    (MSO KMSO MSO)    		 148 135 100LL, Jet A-1+
    83.3 Lindey's Landing West Seaplane Base
    (M35)    		 127 115 MOGAS
    84.1 Seeley Lake Airport
    (23S)    		 127 115 100LL (Texaco), Mogas (Conoco)
    92.3 Felts Field Airport
    (SFF KSFF SFF)    		 257 243 100LL, Jet A-1+
    92.5 Willard Field Airport
    (73S)    		 239 225 100LL
    93.9 Deer Park Airport
    (KDEW DEW)    		 268 254 100LL, Jet A

    Notices to Airmen (NOTAMS)

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    Remarks

    A11 PLB.CFII@GMAIL.COM

    Runways

    Runway Summary

    Runways: 11W/29W
    Longest Runway: 11W/29W is 12000 ft (3658 m) long
    Runways with an Instrument Approach:

    6MT4 Airport Runway Details

    Waterway 11W/29W  12000 ft x 500 ft (3658 m x 152 m)
    Runway Length Source:  OWNER as of 05/14/2020
    Surface:  Water - No special surface treatment

    Waterway 11W

    Runway 29W
    Elevation: 
    		 3340.0 3340.0
    Latitude: 
    		 48-02-27.8500N 48-01-23.8700N
    Longitude: 
    		 115-05-35.0500W 115-03-06.4900W
    Glide Path Angle: 
    		 0.0 degrees 0.0 degrees
    Traffic Pattern: 
    		 Right

    Services

    Airframe Repair: 
    		 Major
    Powerplant Repair: 
    		 Major
    Bottled Oxygen: 
    		 None
    Bulk Oxygen: 
    		 None
    Fuel Available: 
    		 100LL, Jet A
    Landing Fees: 
    		 No
    Parking: 
    		 Tiedowns available

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    Maps & Diagrams

    6MT4 Sectional

    Flight Planning
    at skyvector.com

    6MT4 Diagram


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