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Dane County Regional Truax Field

MSN · KMSN · Madison, WI · 887 ft elevation · var 3W · Towered

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
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
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

Weather

METAR observed

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TAF forecast

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Sun & FAA night 2026-06-21

EventLocal (CDT)UTC
Morning civil twilight
Loggable night ends
04:42 AM09:42Z
Sunrise05:18 AM10:18Z
Sunset08:41 PM01:41Z
Evening civil twilight
Loggable night begins
09:16 PM02:16Z
Loggable night (§1.1)
09:16 PM → 04:42 AM
Night currency (§61.57)
09:41 PM → 04:18 AM

Plan a flight from KMSN

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 in the live weather panel above.

Traffic pattern

03TPANESW
LEFT traffic
Landing
Rwy 03 · 032°
Pattern
left (turns left)
TPA
1,900 ft MSL (≈1,000 AGL)
CTAF
119.3

Enter the left downwind for Rwy 03 at 1,900 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).

Runway 03/21

7,200 ft × 150 ft · Concrete (Good)

Edge lights: High. Weight bearing: Single wheel 120k, Double wheel 230k, Dual tandem 380k.

03
Heading
032° mag · 29° true
Markings
precision
VGSI
4-light PAPI (left) (3°)
Traffic pattern
Left
Approach obstacle
Trees, 72 ft, 2,760 ft from threshold, 460 ft L of centerline — 35:1 slope to clear
Declared TORA/TODA/ASDA/LDA
7,200 / 7,200 / 7,200 / 6,770 ft
LAHSO
3,150 ft (hold short of 14/32)
End lights
REIL
Displaced threshold
431 ft
21
Heading
212° mag · 209° true
Markings
precision
VGSI
4-light PAPI (left) (3°)
Approach lights
MALSR
Instrument landing
ILS/DME · CAT I · LOC 111.55 (DQJ) · GS 3.00°
Traffic pattern
Left
Approach obstacle
Road, 19 ft, 2,050 ft from threshold — 50:1 slope to clear
Declared TORA/TODA/ASDA/LDA
6,770 / 6,770 / 7,015 / 7,015 ft
LAHSO
6,450 ft

Runway 14/32

5,846 ft × 150 ft · Concrete (Good)

Edge lights: High. Weight bearing: Single wheel 120k, Double wheel 210k, Dual tandem 320k.

14
Heading
139° mag · 136° true
Markings
nonprecision
VGSI
4-light PAPI (left) (3°)
Traffic pattern
Left
Declared TORA/TODA/ASDA/LDA
5,846 / 5,846 / 5,846 / 5,369 ft
End lights
REIL
Displaced threshold
477 ft
32
Heading
319° mag · 316° true
Markings
nonprecision
VGSI
4-light PAPI (left) (3°)
Traffic pattern
Left
Approach obstacle
Tree, 112 ft, 4,047 ft from threshold, 440 ft R of centerline — 34:1 slope to clear
Declared TORA/TODA/ASDA/LDA
5,846 / 5,846 / 5,846 / 5,846 ft
LAHSO
5,150 ft (hold short of 18/36)
End lights
REIL

Runway 18/36

9,006 ft × 150 ft · Concrete (Fair)

Edge lights: High. Weight bearing: Single wheel 120k, Double wheel 230k, Dual tandem 380k, Double dual tandem 870k.

18
Heading
185° mag · 182° true
Markings
precision
VGSI
4-light PAPI (left) (3°)
Approach lights
MALSR
Instrument landing
ILS/DME · CAT I · LOC 110.1 (DSZ) · GS 3.00°
Traffic pattern
Left
Approach obstacle
Hill, 50 ft, 1,634 ft from threshold, 689 ft L of centerline — 28:1 slope to clear
Declared TORA/TODA/ASDA/LDA
9,006 / 9,006 / 9,006 / 8,606 ft
LAHSO
4,800 ft (hold short of 03/21)
End lights
centerline
Displaced threshold
400 ft
36
Heading
005° mag · 2° true
Markings
precision
VGSI
4-light PAPI (left) (3°)
Approach lights
ALSF2
Instrument landing
ILS/DME · CAT III · LOC 110.1 (MSN) · GS 3.00°
Traffic pattern
Left
Declared TORA/TODA/ASDA/LDA
9,006 / 9,006 / 9,006 / 8,006 ft
LAHSO
7,050 ft (hold short of 14/32)
End lights
centerline
Displaced threshold
1,001 ft
ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Communication frequencies

ServiceFrequencyNotes
LONE ROCK RCAG133.3APCH/DEP SVC PRVDD BY CHICAGO ARTCC ON FREQS 133.3/257.925 (LONE ROCK RCAG) & 135.45 WHEN MADISON APCH CTL CLSD.
LONE ROCK RCAG257.925APCH/DEP SVC PRVDD BY CHICAGO ARTCC ON FREQS 133.3/257.925 (LONE ROCK RCAG) & 135.45 WHEN MADISON APCH CTL CLSD.
CTAF119.3ACTVT 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.
LCL/P119.3
APCH/P DEP/P120.1
CLASS C120.1
EMERG121.5
CD/P121.625
GND/P121.9
UNICOM122.95
ANG OPS123.4CALL MADISON OPS .
ATIS124.65
APCH/P DEP/P135.45
CLASS C135.45
ANG OPS138.175
ANG OPS238.2
EMERG243.0
LCL/P257.8
ATIS278.3
ANG OPS299.9CALL MADISON OPS
DEP/P318.1
APCH/P IC343.7
CLASS C343.7
GND/P348.6
APCH/P350.3
CLASS C350.3
ANG OPS40.8CALL MADISON OPS
MADISON RCO122.6
MSN VORTAC108.6/23X

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

Instrument landing systems

RunwayILS
RWY 21ILS/DME · CAT I · LOC 111.55 (DQJ) · GS 3.00°
RWY 18ILS/DME · CAT I · LOC 110.1 (DSZ) · GS 3.00°
RWY 36ILS/DME · CAT III · LOC 110.1 (MSN) · GS 3.00°

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

Nearby navigation aids

NavAidTypeFreqRadial / Dist magnetic
MSN · MadisonVORTAC108.60r159° / 0.3 NM
DLL · DellsVORTAC117.00r140° / 30.9 NM
LNR · Lone RockVOR-DME112.80r105° / 36 NM
JVL · JanesvilleVOR-DME114.30r341° / 36.4 NM

Airport diagram

Open PDF ↗
Preview diagram Open the airport diagram PDF

Procedures at a glance

⚠ Hot spots published at this airport — review the hot-spot chart before you taxi ↗
Lowest mins: ILS · vertical guidance Takeoff mins / ODP ↗ Non-std alternate mins ↗

Approaches16

Minimums & Hot Spots

Chart Supplement FAA A/FD

Open PDF ↗
Preview Chart Supplement Open the Chart Supplement PDF

VFR sectional

Open KMSN on the VFR sectional (SkyVector) ↗

Services

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

Owner
DANE COUNTY
4000 INTERNATIONAL LANE, MADISON, WI
608-246-3380
Manager
MARK PAPKO
4000 INTERNATIONAL LANE, MADISON, WI
605-246-3390

Remarks FAA

  • 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.
  • 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.
  • MILITARY: OVHD TFC PAT ALT RSTRD TO 3500 FT MSL; RWY 18/36 L TURN.
  • MATT POWERS - 608-661-6452
  • BAK-14 BAK-12(B) (1900').
  • BAK-14 BAK-12(B) (1620').
  • BAK-14 BAK-12(B) (1750').
  • PCR VALUE: 780/R/D/W/T
  • PCR VALUE: 710/R/D/W/T
  • PCR VALUE: 780/R/C/W/T
  • ALSF2 OPRS AS SSALR WHEN TWR CLSD.
  • RWY CC NOT REPORTED.
  • RWY CC NOT REPORTED.
  • UNUSBL BYD 9 DEGS RIGHT OF CNTRLN.
  • TAP
  • APCH RATIO 40:1 FM DTHR.

Nearby airports

6P3 · Waunakee Airport (6 NM)87Y · Blackhawk Airfield (7 NM)WS12 · Elert AirportPrivate (8 NM)WI65 · Dane AirportPrivate (8 NM)WN85 · Morrisonville International AirportPrivate (8 NM)C29 · Middleton Municipal Morey Field (9 NM)

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.

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. Check the Comms & NavAids tab 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 tab 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.

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