Seeley Lake

23S · Seeley Lake, MT · Non-towered · Print kneeboard · Open on the map

Elevation

4,256 ft MSL

Longest runway

4,575 ft 16/34

Runway

Mag var

18E

CTAF 122.9

Nearby now

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Weather

METAR observed

No weather station at 23S. Nearby reporting stations: KMSO (31 NM), KHRF (62 NM), KCII (65 NM).

TAF forecast

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Sun & FAA night2026-09-19 · night begins 08:08 PM

Event	Local (MDT)	UTC
Morning civil twilight Loggable night ends	06:46 AM	12:46Z
Sunrise	07:16 AM	13:16Z
Sunset	07:38 PM	01:38Z
Evening civil twilight Loggable night begins	08:08 PM	02:08Z

Loggable night (§1.1)

08:08 PM → 06:46 AM

Night currency (§61.57)

08:38 PM → 06:16 AM

Plan a flight from 23S

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

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

RWY 16LEFT traffic

Heading: 162° mag · 180° true
Dimensions: 4,575 × 75 ft
TPA: 5,300 ft MSL (≈1,000 AGL) · standard
Surface: Turf
CTAF: 122.9

Enter the left downwind (heading 342°) on the 45° at 5,300 ft MSL (≈1,000 AGL).

More details — RWY 16

Threshold elev: 4,256 ft
Approach obstacle: Trees, 50 ft, 350 ft from threshold — 7:1 slope to clear · penetrates the 20:1 visual approach surface

Condition: Excellent.

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
16/34	4,575 ft

Prefer one flat page? Full runway details for 23S → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 23S kneeboard →

Comms & NavAids

Communication frequencies

Taxi & takeoff

CTAF

122.9

Source: FAA NASR (current 28-day cycle).

Nearby navigation aids

MSO 112.80

NavAid	Type	Freq · ch	Range	Radial / Dist magnetic
MSO · Missoula	VOR/DME	112.80 · 75X	Low	r045° / 30.9 NM

Prefer one flat list? All 23S frequencies →

Charts & procedures

PDF ↗

Chart Supplement ↗

VFR sectional →

Airport info

Airport information

FAA LID: 23S
Coordinates: 47.1819, -113.4452
Elevation: 4,256 ft MSL
Magnetic variation: 18E
Sectional chart: GREAT FALLS
Airport use: Public
Control tower: No
ARTCC: SALT LAKE CITY (ZLC)
Flight service (FSS): GREAT FALLS · 122.3 · 1-800-WX-BRIEF
NOTAM facility: GTF
Attendance: UNATNDD
Beacon: white (SS-SR)
Segmented circle: Yes
Wind indicator: yes
Activated: 1964/08
Distance from city: 2 E

Night operations

Airport lighting: SEE RMK
Rotating beacon: white · SS-SR
Pilot-controlled lighting: Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗

FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.

Services fuel · repairs · oxygen · attendance

Bottled oxygen: NONE
Bulk oxygen: NONE
Airframe service: NONE
Powerplant service: NONE
Parking: tiedowns

Ownership & management 2 contacts

Owner

MONTANA AERONAUTICS DIVISION

PO BOX 200507, HELENA, MT

406-444-2506

Manager

TIM CONWAY

PO BOX 200507, HELENA, MT

406-444-2506

Remarks FAA · 11 notes

General

TKOFS TO N NOT RECOMMENDED DUE TO RISING TRRN.
TREES IN TRANSITIONAL SFC FULL RWY LEN BOTH SIDES.
BIRDS & WILDLIFE ON & INVOF ARPT.
SNOW REMOVAL INTMT, CALL AMGR FOR CURRENT CONDS 406-444-2506.
RWY 34 HAS 1150 FT OVRN AVBL FOR TKOF AND LDG.
CREW CAR AVBL.
FOR CD CTC SPOKANE APCH AT 509-742-2522, WHEN APCH CLSD CTC SALT LAKE ARTCC AT 801-320-2568
RWY 16 DTHR 311 FT FM RWY END FOR 20:1 APCH SLP MKD WITH DBL W CONES.

Runways

RWY 16 MKD FULL LEN WITH W CONES & REFLECTIVE TAPE - SUMMER MONTHS ONLY
RWY 34 MKD FULL LEN WITH W CONES & REFLECTIVE TAPE - SUMMER MONTHS ONLY.

Lighting

RWY 34 SOLAR LGTS FIRST 2/3 OF RWY - SUMMER MONTHS ONLY

Nearby airports

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Also nearby: 42MT Crown Ranch Airpark (private) (16 NM) · S04 Condon USFS (24 NM) · 52S St Ignatius (27 NM) · RC0 Rock Creek (29 NM) · 3U7 Benchmark (29 NM)

Destination

FAA remark: "CREW CAR AVBL."

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About 23S

Seeley Lake (23S) is an airport in Seeley Lake, MT, at 4,256 ft MSL. It has 1 runway, the longest 4,575 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 23S, refreshed from the Aviation Weather Center and FAA NASR.

Does 23S have a control tower?

No. Seeley Lake is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.

What is the longest runway at 23S?

Seeley Lake has 1 runway; the longest is 4,575 ft. See the Runways section for headings, surface, and lighting.

Where is 23S?

Seeley Lake is in Seeley Lake, MT, at an elevation of 4,256 ft MSL. Coordinates: 47.1819, -113.4452.

More about 23S

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 23S 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.