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DANE COUNTY RGNL/TRUAX FLD - Airport Diagram
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KMSN
ICAO KMSNIATA MSNLocal MSN
DANE COUNTY RGNL/TRUAX FLD
PublicPUB

5 miles NE of MADISON, WI, US
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Status
Operational
Coordinates
43° 08' 24"N 89° 20' 15"W
Elevation
887' MSL
Pattern Alt
1887' MSL
Mag Variation
3°W
Declination
3°W
Fuel
JET A, JET A+, CILI, 100LL
FSS
GREEN BAY (GRB)
Sectional
CHICAGO
ARTCC
CHICAGO (ZAU)
Data Effective
2/19/26-3/19/26
KMSN VFR
4:53 PM CST  
Broken 25,000'
Few 4,000'
Few 2,500'
10sm
51°F
37°F
30.03"Hg
070° 6kts
AO2 SLP177 T01060028
METAR KMSN 042253Z 07006KT 10SM FEW025 FEW040 BKN250 11/03 A3003 RMK AO2 SLP177 T01060028
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Weather and Advisory

ATIS 124.65
ASOS (608) 410-1285

Common

CTAF 119.3
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.
UNICOM 122.95

Clearance

Clearance Delivery 121.625

Ground

MADISON GROUND 121.9
0600-2300

Tower

MADISON TOWER 119.3
0600-2300

Approach

MADISON APPROACH 120.1
EAST
MADISON APPROACH 135.45
WEST

Departure

MADISON DEPARTURE 120.1
EAST
MADISON DEPARTURE 135.45
WEST

Center

MADISON CENTER 133.3
LOW, APCH/DEP SVC PRVDD BY CHICAGO ARTCC ON FREQS 133.3/257.925 (LONE ROCK RCAG) & 135.45 WHEN MADISON APCH CTL CLSD.

Flight Service

Flight Service 122.6
(GRB)

Emergency

Emergency 121.5

Military

ANG OPS 40.8
CALL MADISON OPS
ANG OPS 123.4
CALL MADISON OPS .
ANG OPS 138.175

Other

CLASS C 120.1
EAST
CLASS C 135.45
WEST

Terminal Area Forecast

KMSN
Wed, 3/4 5:31 PM CST
Wed, 3/4 6:00 PM CST - Thu, 3/5 6:00 PM CST
VFR
6:00 PM CST - 11:00 PM CST
Broken 25,000'
6sm
070° 6kts
MVFR
11:00 PM CST - 2:00 AM CST
Broken 2,600'
6sm
VRB° 3kts
MVFR
2:00 AM CST - 5:00 AM CST
Broken 1,600'
6sm
VRB° 3kts
IFR
5:00 AM CST - 10:00 AM CST
Mist
Overcast 900'
5sm
VRB° 4kts
LIFR
7:00 AM CST - 10:00 AM CST
Light Rain and Mist
Overcast 400'
2sm
Calm
IFR
10:00 AM CST - 11:00 AM CST
Mist
Broken 800'
4sm
060° 6kts
LIFR
10:00 AM CST - 11:00 AM CST
Light Rain and Mist
Overcast 400'
2sm
Calm
IFR
11:00 AM CST - 6:00 PM CST
Mist
Broken 700'
3sm
060° 6kts
TAF KMSN 042331Z 0500/0524 07006KT P6SM BKN250
   FM050500 VRB03KT P6SM BKN026
   FM050800 VRB03KT P6SM BKN016
   FM051100 VRB04KT 5SM BR OVC009
   PROB30 0513/0516 2SM -RA BR OVC004
   FM051600 06006KT 4SM BR BKN008
   PROB30 0516/0517 2SM -RA BR OVC004
   FM051700 06006KT 3SM BR BKN007
KMSN
EffectiveExpiresCategoryNOTAM
Domestic
3/7/26
1100Z
3/7/26
2300Z
!MSN 03/020 MSN OBST TOWER LGT (ASR 1034440) 430716.00N0891608.00W (3.2NM ESE MSN) 1094.2FT (104.0FT AGL) U/S 2603071100-2603072300
3/4/26
1300Z
3/4/26
1500Z
Runway!MSN 03/021 MSN RWY 18/36 CLSD 2603041300-2603041500
3/4/26
1200Z
3/4/26
1300Z
!MSN 02/133 MSN COM REMOTE TRANS/REC 119.15 U/S 2603041200-2603041300
3/3/26
1245Z
3/4/26
2215Z
!MSN 03/022 MSN OBST CRANE (ASN UNKNOWN) 430721N0891946W (.063NM SE APCH END RWY 36)
UNKNOWN (90FT AGL) FLAGGED AND LGTD 2603031245-2603042215
3/2/26
1353Z
!MSN 03/019 MSN NAV VORTAC NOT MNT 2603021353-2603092000EST
3/2/26
1352Z
!MSN 03/018 MSN COM REMOTE COM OUTLET 122.6 U/S 2603021352-2603092000EST
1/30/26
1114Z
12/31/26
2359Z
!MSN 01/411 MSN OBST BLDG LGT (ASN UNKNOWN) 430718N0892026W (0.39NM S APCH END RWY 36)
UNKNOWN (20FT AGL) U/S 2601301114-2612312359
11/11/25
2123Z
10/26/26
2359Z
!MSN 11/054 MSN OBST CRANE (ASN 2025-AGL-9148-OE) 430450N0892236W (4.0NM SSW MSN) 1110FT (260FT AGL) FLAGGED AND LGTD 2511112123-2610262359
10/3/25
1808Z
5/29/26
2300Z
!MSN 10/006 MSN APRON EAST RAMP SFC MARKINGS NOT MARKED BTN TWY M AND TWY J 2510031808-2605292300
FDC
3/2/26
1358Z
4/2/26
1358Z
!FDC 6/1998 MSN IAP DANE COUNTY RGNL/TRUAX FLD, MADISON, WI.
ILS OR LOC RWY 18 , AMDT 2B...
ILS OR LOC RWY 21, ORIG-E...
ILS OR LOC/DME RWY 36, AMDT 2B...
VOR RWY 14, AMDT 1...
VOR RWY 32, AMDT 1B...
ILS RWY 36 (SA CAT I), AMDT 2B...
ILS RWY 18 (SA CAT I-II), AMDT 2B...
ILS RWY 36 (CAT II-III), AMDT 2B...
ALTERNATE MINIMUMS NA EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS,
MSN VORTAC UNMONITORED. 2603021358-2604021358EST
2/6/26
0834Z
!FDC 6/0913 MSN IAP DANE COUNTY RGNL/TRUAX FLD, MADISON, WI.
RNAV (GPS) RWY 3, ORIG-E...
LPV DA 1141/HAT 281 ALL CATS. VIS 7/8 ALL CATS.
TEMPORARY CRANE, 1007 MSL, 1108FT EAST OF RWY 3 (2024-AGL-15586-NRA).
2602060834-2609182355EST
1/7/26
1319Z
!FDC 6/1179 MSN IAP DANE COUNTY RGNL/TRUAX FLD, MADISON, WI.
RNAV (GPS) RWY 3, ORIG-E...
LPV DA 1141/HAT 281 ALL CATS. VIS 7/8 ALL CATS.
LNAV/VNAV DA 1263/HAT 403 ALL CATS. VIS 1 1/8 ALL CATS.
TEMPORARY CRANES, UP TO 1052 MSL, BEGINNING 3947FT SW OF RWY 3 (2024-AGL-16443 THRU 16446-OE) , TEMPORARY CRANE, 1007 MSL, 1108FT EAST OF RWY 3 (2024-AGL-15586-NRA).
2601071319-2608191319EST
10/31/24
1312Z
!FDC 4/6966 MSN IAP DANE COUNTY RGNL/TRUAX FLD, MADISON, WI.
ILS OR LOC RWY 21, ORIG-E...
RADAR OR DME REQUIRED EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS.
DLL R-129 RADIAL UNUSABLE..
2410311312-2610311312EST
Military
2/12/26
2246Z
5/8/26
2359Z
Runway!KMSN M0009/26 MSN RWY 18 BAK-12 ARST SYSTEM NOT STD PAVEMENT DEGRADATION WITHIN 200'. USE CAUTION 2602122246-2605082359
2/10/26
1921Z
5/7/26
2359Z
WISCONSIN AIR NTL GUARD RAMP VEHICLE SERVICE ROAD AT NORTH END OF APRON. NO ACCESS TO 115FW APRON FROM SOUTH RAMP. LIGHTED AND BARRICADED
Yes
ALL
DANE COUNTY
4000 INTERNATIONAL LANE
MADISON, WI 53704
Phone: 608-246-3380
MARK PAPKO
4000 INTERNATIONAL LANE
MADISON, WI 53704
Phone: 605-246-3390
GREEN BAY FSS (GRB)
Toll Free: 1-800-WX-BRIEF
MSN
--
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.
N/A
Yes - Lighted
No
No
Hangar
NOT a Landing Rights Airport
NOT an Airport of Entry
Major
Major
High & Low Pressure
None
Air Freight
Air Ambulance
Avionics
Cargo Handling
Charter Service
Pilot Instruction
Aircraft Rental
Aircraft Sales

Runway 03/21

7200 ft. x 150 ft.
CONC  
Good 
GRVD 
HIGH 
 
120,000lbs 
230,000lbs 
380,000lbs 
-- 
  Runway 03 Runway 21
True Heading 29°209°
Traffic Pattern
Markings PIR PIR
Markings Condition GOOD GOOD
Latitude 43° 07' 60"N 43° 09' 02"N
Longitude 89° 20' 30"W 89° 19' 43"W
Elevation 861' 887'
Threshold Crossing Height 49 ft. AGL 53 ft. AGL
Visual Glide Path Angle 3° 3°
Visual Slope Indicator P4L P4L
Approach Lights MALSR
Centerline Lights
Runway End Identifier Lights Yes

Runway 14/32

5846 ft. x 150 ft.
CONC  
Good 
GRVD 
HIGH 
 
120,000lbs 
210,000lbs 
320,000lbs 
-- 
  Runway 14 Runway 32
True Heading 136°316°
Traffic Pattern Left Left
Markings NPI NPI
Markings Condition GOOD GOOD
Latitude 43° 08' 52"N 43° 08' 11"N
Longitude 89° 20' 30"W 89° 19' 35"W
Elevation 859' 862'
Threshold Crossing Height 45 ft. AGL 56 ft. AGL
Visual Glide Path Angle 3° 3°
Visual Slope Indicator P4L P4L
Approach Lights
Centerline Lights No No
Runway End Identifier Lights Yes Yes

Runway 18/36

9006 ft. x 150 ft.
CONC  
Fair 
GRVD 
HIGH 
 
120,000lbs 
230,000lbs 
380,000lbs 
870,000lbs 
  Runway 18 Runway 36
True Heading 182°2°
Traffic Pattern Left Left
Markings PIR PIR
Markings Condition GOOD GOOD
Latitude 43° 08' 57"N 43° 07' 28"N
Longitude 89° 20' 28"W 89° 20' 32"W
Elevation 860' 862'
Threshold Crossing Height 57 ft. AGL 59 ft. AGL
Visual Glide Path Angle 3° 3°
Visual Slope Indicator P4L P4L
Approach Lights MALSR ALSF2
Centerline Lights Yes Yes
Runway End Identifier Lights No No
A110-2W RAMP RSTRD TO ACR.
A110-24ANG: 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.
A110-25AVOID OTFC OF YAHARA RIVER INVOF ARPT BLW 2000 FT.
A110-28RWY 14 & 18 APCH ENDS CLOSELY ALIGNED; VERIFY RWY & HDG BFR DEP.
A110-29TWY 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.
A110-3NOISE ABATEMENT PROC IN EFCT; DEP RWY 03 & 36; ARR RWY 18 & 21.
A110-31ARNG: 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.
A110-32HIGH RISK FLT TEST PPR - AMGR.
A110-34ENG RUNUP N HOLD BAY ONLY.
A110-35BARRICADES ALG W EDGE OF S RAMP ADJ MIL RAMP.
A110-36W RAMP UNCTLD; PUSHBACK AT PILOT DISCRETION.
A110-38AVGAS E OR S APRON ONLY.
A110-41RWY 18, 21, 36 BAK-14 ARRESTING CABLE MIL USE ONLY; RETRACTED WHEN NOT IN USE.
A110-42FOR CD CTC MADISON APP/DEP CON AT 608-249-8240. WHEN MADISON APCH CLSD, FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
A110-43TWY F MIL FIGHTER USE ONLY. TWY G PERM CLSD.
A110-44GEN AVN SVC AVBL E RAMP ONLY.
A110-5TBJT TRNG OPS PROH.
A110-7BIRDS ON & INVOF ARPT.
A14MATT POWERS - 608-661-6452
A39-03/21PCR VALUE: 780/R/D/W/T
A39-14/32PCR VALUE: 710/R/D/W/T
A39-18/36PCR VALUE: 780/R/C/W/T
A43-18UNUSBL BYD 9 DEGS RIGHT OF CNTRLN.
A47-18RWY CC NOT REPORTED.
A47-36RWY CC NOT REPORTED.
A49-36ALSF2 OPRS AS SSALR WHEN TWR CLSD.
A57-03TAP
A57-18APCH RATIO 40:1 FM DTHR.
A81-APTACTVT 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.
E147MILITARY: OVHD TFC PAT ALT RSTRD TO 3500 FT MSL; RWY 18/36 L TURN.
E60-18_BAK-14BAK-14 BAK-12(B) (1900').
E60-21_BAK-14BAK-14 BAK-12(B) (1620').
E60-36_BAK-14BAK-14 BAK-12(B) (1750').
DANE COUNTY RGNL/TRUAX FLD (ICAO: KMSN, IATA: MSN) is a public airport located in MADISON, WI, US.