Brown Cabin Seaplane BasePrivate
6MT4 · Libby, MT · Non-towered · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-11-05 · night begins 05:49 PM
| Event | Local (MST) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:58 AM | 13:58Z |
| Sunrise | 07:31 AM | 14:31Z |
| Sunset | 05:16 PM | 00:16Z |
| Evening civil twilight Loggable night begins | 05:49 PM | 00:49Z |
Plan a flight from 6MT4
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 11W/29W | 12,000 ft |
Prefer one flat page? Full runway details for 6MT4 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 6MT4 kneeboard →
Comms & NavAids
Nearby navigation aids
FCA 113.20
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| FCA · Kalispell | VOR/DME | 113.20 · 79X | High | r236° / 38.2 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for 6MT4 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 6MT4
- Coordinates
- 48.0381, -115.0914
- Elevation
- 3,340 ft MSL
- Sectional chart
- GREAT FALLS
- Airport use
- Private
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- COLUMBUS · 122.2 · 1-800-WX-BRIEF
- Segmented circle
- No
- Activated
- 2020/05
- Distance from city
- 28 SE
Ownership & management 2 contacts
Remarks FAA · 1 notes
Contact
- PLB.CFII@GMAIL.COM
Nearby airports
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Also nearby: MT53 Carson Field (private) (10 NM) · 0MT6 Hanson (private) (17 NM) · 97MT Cabin Creek Landing (private) (17 NM) · S59 Libby (22 NM) · MT69 Littlebear (private) (24 NM) · 29MT Craik (private) (24 NM)
About 6MT4
Brown Cabin (6MT4) is a seaplane base in Libby, MT, at 3,340 ft MSL. It has 1 runway, the longest 12,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 6MT4, refreshed from the Aviation Weather Center and FAA NASR.
Does 6MT4 have a control tower?
No. Brown Cabin is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 6MT4?
Brown Cabin has 1 runway; the longest is 12,000 ft. See the Runways section for headings, surface, and lighting.
Where is 6MT4?
Brown Cabin is in Libby, MT, at an elevation of 3,340 ft MSL. Coordinates: 48.0381, -115.0914.
More about 6MT4
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 6MT4 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.