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6MT4 Brown Cabin Seaplane Base
Libby, Montana, USA

FAA INFORMATION EFFECTIVE 16 APRIL 2026

Location

FAA Identifier: 6MT4
Lat/Long: 48-02-17.0000N 115-05-29.0000W
48-02.283333N 115-05.483333W
48.0380556,-115.0913889
(estimated)
Elevation: 3340 ft. / 1018 m (estimated)
From city: 28 miles SE of LIBBY, MT
Time zone: UTC -6 (UTC -7 during Standard Time)
Zip code: 59925

Seaplane Base Operations

Seaplane Base use: Private use. Permission required prior to landing
Activation date: 05/2020
Control tower: no
ARTCC: SEATTLE CENTER
FSS: COLUMBUS FLIGHT SERVICE STATION
Attendance: 
Segmented circle: no

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
FCAr236/38.2KALISPELL VOR/DME113.2018E

 
NDB name  Hdg/Dist  Freq  Var  ID
SMITH LAKE246/25.651515ESAK ... .- -.-

Seaplane Base Services

Runway Information

Runway 11W/29W

Dimensions: 12000 x 500 ft. / 3658 x 152 m
Surface: water
RUNWAY 11W  RUNWAY 29W
Latitude: 48-02.464167N48-01.397833N
Longitude: 115-05.584167W115-03.108167W
Elevation: 3340.0 ft.3340.0 ft.
Traffic pattern: leftright

Seaplane Base Ownership and Management from official FAA records

Ownership: Privately-owned
Owner: PERRY BROWN
1325 SOUTH NUCLEUS AVE
COLUMBIA FALLS, MT 59912
Phone 406-249-3637
PLB.CFII@GMAIL.COM
Manager: PERRY BROWN
1325 SOUTH NUCLEUS AVE
COLUMBIA FALLS, MT 59912
Phone 406-249-3637

Instrument Procedures

There are no published instrument procedures at 6MT4.

Some nearby airports with instrument procedures:

S59 - Libby Airport (22 nm NW)
KGPI - Glacier Park International Airport (37 nm NE)
8S1 - Polson Airport (42 nm SE)
7S0 - Ronan Airport (49 nm SE)
KSZT - Sandpoint Airport (61 nm W)
  
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Aerial photo
No photo
 
Sectional chart

 
Airport distance calculator
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From to 6MT4

Sunrise and sunset
Times for 01-May-2026
 Local
(UTC-6)		 Zulu
(UTC)
Morning civil twilight05:4811:48
Sunrise06:2312:23
Sunset20:5202:52
Evening civil twilight21:2703:27

Current date and time
Zulu (UTC)  01-May-2026 20:27:09
Local (UTC-6)  01-May-2026 14:27:09
 
METAR
KGPI 
37nm NE 		011955Z 18013G23KT 10SM CLR 19/00 A3006 RMK AO2 SLP183 T01940000
KMLP 
42nm SW 		011953Z AUTO 00000KT 10SM CLR 14/M04 A3016 RMK AO2 SLP140 T01441039
TAF
KGPI 
37nm NE 		011720Z 0118/0218 12005KT P6SM SKC FM012100 17011KT P6SM FEW060 FM020300 VRB04KT P6SM BKN250 FM021200 02011KT P6SM BKN200
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