Dane County Regional Truax Field
MSN · KMSN · Madison, WI · Towered · Print kneeboard
FAA airport diagramView full size ↓ Nearby now
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 08:47 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:19 AM | 10:19Z |
| Sunrise | 05:51 AM | 10:51Z |
| Sunset | 08:15 PM | 01:15Z |
| Evening civil twilight Loggable night begins | 08:47 PM | 01:47Z |
Plan a flight from KMSN
Past 24 hours category · wind · ceiling · visibility trends
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Density altitude today projected curve · departure window · takeoff roll
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 14LEFT traffic
- Heading
- 140° mag · 137° true
- Dimensions
- 5,846 × 150 ft
- TPA
- 1,900 ft MSL (≈1,000 AGL) · standard
- Surface
- Concrete
- Lights
- 4-light PAPI (left) (3°)
- Displaced thr
- 477 ft
- CTAF
- 119.3
More details — RWY 14
- Threshold elev
- 859 ft
- Markings
- nonprecision
- Threshold crossing height
- 45 ft
- TDZ elevation
- 861 ft
- Declared TORA/TODA/ASDA/LDA
- 5,846 / 5,846 / 5,846 / 5,369 ft
- End lights
- REIL
Pattern side + displaced threshold: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 03/21 | 7,200 ft | |
| 14/32 | 5,846 ft | |
| 18/36 | 9,006 ft |
Prefer one flat page? Full runway details for KMSN → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KMSN kneeboard →
Comms & NavAids
Communication frequencies
Before taxi
“Madison”Taxi & takeoff
“Madison”Departure & arrival
“Madison”Also
ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).
By procedure & sector (15 frequencies)
| Frequency | Used by |
|---|---|
| 40.8 | ANG OPS |
| 120.1 | CLASS C (EAST) |
| 123.4 | ANG OPS |
| 135.45 | CLASS C (WEST) |
| 138.175 | ANG OPS |
| 238.2 | ANG OPS |
| 243.0 | EMERG |
| 257.8 | LCL/P |
| 257.925 | LONE ROCK RCAG (LOW) |
| 278.3 | ATIS |
| 299.9 | ANG OPS |
| 318.1 | DEP/P |
| 343.7 | APCH/P IC (WEST) · CLASS C (WEST) |
| 348.6 | GND/P |
| 350.3 | APCH/P (EAST) · CLASS C (EAST) |
Source: FAA NASR (current 28-day cycle).
Instrument landing systems
RWY 21 · RWY 18 · RWY 36
| Runway | ILS |
|---|---|
| RWY 21 | ILS/DME · CAT I · LOC 111.55 (DQJ) · GS 3.00° |
| RWY 18 | ILS/DME · CAT I · LOC 110.1 (DSZ) · GS 3.00° |
| RWY 36 | ILS/DME · CAT III · LOC 110.1 (MSN) · GS 3.00° |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
MSN 108.60 · DLL 117.00 · JVL 114.30
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| MSN · Madison | VORTAC | 108.60 · 23X | Low | r159° / 0.3 NM |
| DLL · Dells | VORTAC | 117.00 · 117X | High | r140° / 30.9 NM |
| JVL · Janesville | VOR/DME | 114.30 · 90X | Low | r341° / 36.4 NM |
Prefer one flat list? All KMSN frequencies →
Charts & procedures
Lowest minimums here: ILS with vertical guidance · VFR sectional →
Airport info
From the field
Do you run KMSN, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.
Airport information
- ICAO / IATA
- KMSN / MSN
- Coordinates
- 43.1399, -89.3375
- Elevation
- 887 ft MSL
- Magnetic variation
- 3W
- Sectional chart
- CHICAGO
- Airport use
- Public
- Control tower
- Yes
- Tower hours
- 0600-2300
- Airspace
- Class C · CLASS C SVC 0600-2300; OTHER TIMES CLASS E
- Weather station
- ASOS · 124.65 · ☎ 608-410-1285
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- GREEN BAY · 122.6 · 1-800-WX-BRIEF
- FSS outlet
- RCO → Green Bay Radio (24)
- NOTAM facility
- MSN
- Attendance
- ALL ALL
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- FAR 139 class
- I C
- GPS MON airport
- Yes
- Activated
- 1937/09
- Distance from city
- 5 NE
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MALSR RWY 18 & 21; REIL RWY 03, 14 & 32; HIRL RWY 03/21, 14/32 & 18/36 - CTAF. WHEN ATCT CLSD HIRL RWY 18/36 PRESET LOW INTST; INCR INTST - CTAF. on 119.3 — Chart Supplement ↗
Runway lighting aids — 03: 4-light PAPI (left) · 21: 4-light PAPI (left) + MALSR · 14: 4-light PAPI (left) · 32: 4-light PAPI (left) · 18: 4-light PAPI (left) + MALSR · 36: 4-light PAPI (left) + ALSF2.
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
- Fuel available
- 100LL, Jet A, A++
- Bottled oxygen
- HIGH/LOW
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- hangars
- Other services
- Air freight, Air ambulance, Avionics, Cargo, Charter, Instruction, Rental, Aircraft sales
Ownership & management 2 contacts
Remarks FAA · 29 notes
General
- W RAMP RSTRD TO ACR.
- NOISE ABATEMENT PROC IN EFCT; DEP RWY 03 & 36; ARR RWY 18 & 21.
- TBJT TRNG OPS PROH.
- BIRDS ON & INVOF ARPT.
- ANG: PPR - 115FW.PPR.ORG@US.AF.MIL. OPS HR 1200-2230Z++MON-THURS - D724-8642/8436/C608 245-4642/4436. H24 - D724-8580 H24/C608 245-4580.
- AVOID OTFC OF YAHARA RIVER INVOF ARPT BLW 2000 FT.
- RWY 14 & 18 APCH ENDS CLOSELY ALIGNED; VERIFY RWY & HDG BFR DEP.
- TWY L1, L6, B5, E & H NORTH OF RWY 14/32, E RAMP BTN TWY H & M CLSD TO WINGSPAN GTR THAN 118 FT. TWYS B1, J & B NORTH OF TWY M & E RAMP CLSD TO WINGSPAN GTR THAN 150 FT.
- ARNG: PPR; TSNT SVC LTD; HEL RQR SVC - ARMY OPS; 1300-2200Z++ MON, TUE; 1300-0400Z++ WED-FRI, CLSD SAT, SUN - D745-8310/C608-301-8310.
- HIGH RISK FLT TEST PPR - AMGR.
- ENG RUNUP N HOLD BAY ONLY.
- BARRICADES ALG W EDGE OF S RAMP ADJ MIL RAMP.
- W RAMP UNCTLD; PUSHBACK AT PILOT DISCRETION.
- AVGAS E OR S APRON ONLY.
- RWY 18, 21, 36 BAK-14 ARRESTING CABLE MIL USE ONLY; RETRACTED WHEN NOT IN USE.
- FOR CD CTC MADISON APP/DEP CON AT 608-249-8240. WHEN MADISON APCH CLSD, FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
- TWY F MIL FIGHTER USE ONLY. TWY G PERM CLSD.
- GEN AVN SVC AVBL E RAMP ONLY.
Runways
- PCR VALUE: 780/R/D/W/T
- PCR VALUE: 710/R/D/W/T
- PCR VALUE: 780/R/C/W/T
- RWY CC NOT REPORTED.
- RWY CC NOT REPORTED.
- UNUSBL BYD 9 DEGS RIGHT OF CNTRLN.
Lighting
- ACTVT MALSR RWY 18 & 21; REIL RWY 03, 14 & 32; HIRL RWY 03/21, 14/32 & 18/36 - CTAF. WHEN ATCT CLSD HIRL RWY 18/36 PRESET LOW INTST; INCR INTST - CTAF.
- ALSF2 OPRS AS SSALR WHEN TWR CLSD.
Obstructions
- TAP
- APCH RATIO 40:1 FM DTHR.
Contact
- MATT POWERS - 608-661-6452
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Nearby airports
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Also nearby: 6P3 Waunakee Airport (6 NM) · 87Y Blackhawk Airfield (7 NM) · WS12 Elert Airport (private) (8 NM) · WI65 Dane Airport (private) (8 NM) · WN85 Morrisonville International Airport (private) (8 NM) · C29 Middleton Municipal Morey Field (9 NM)
About KMSN
Dane County Regional Truax Field (MSN · KMSN) is an airport in Madison, WI, at 887 ft MSL. It has 3 runways, the longest 9,006 ft, with a control tower. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KMSN, refreshed from the Aviation Weather Center and FAA NASR.
Does KMSN have a control tower?
Yes. Dane County Regional Truax Field has an operating FAA control tower. See the Comms & NavAids section for tower and ground frequencies.
What is the longest runway at KMSN?
Dane County Regional Truax Field has 3 runways; the longest is 9,006 ft. See the Runways section for headings, surface, and lighting.
Where is KMSN?
Dane County Regional Truax Field is in Madison, WI, at an elevation of 887 ft MSL. Coordinates: 43.1399, -89.3375.
Fly out of KMSN often?
Save KMSN as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
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 KMSN 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.