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Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer

Dane Co Regl-Truax (KMSN/MSN) — Madison, United States

At a glance

Operating hours
Open 24h
Port of entry
No
Fuel
100LL, Jet A, Jet A++
Tower
119.3
Runways
03/21, 14/32, 18/36
Elevation
887 ft

Times in UTC. Reference only: verify with the AIP and NOTAMs.

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90% Data Complete 47 of 52 points
Missing: Contacts
Section Breakdown
Basic Info 7/7
Runways 4/4
Frequencies 4/4
Operations 2/2
Fuel 1/1
Contacts 0/2
Additional Info 7/10
Observed Activity · Oct 27
87 aircraft observed within 6 NM · 22 on the ground · busiest hour 23:00Z
2026-10-142026-10-27
Distinct ADS-B aircraft seen within 6 NM below 10,000 ft AGL per UTC day · community-feed coverage varies · not official movement totals
Data last updated:
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Basic Airport Information

  • ICAO: KMSN
  • Name: Dane Co Regl-Truax
  • Type: medium_airport
  • Category: Domestic
  • Latitude: 43.1399
  • Longitude: -89.337502
  • Elevation: 887 ft
  • Country: United States
  • Municipality: Madison
  • IATA Code: MSN
  • FAA Code: N/A
  • FIR: N/A
  • Timezone: America/Chicago
  • Distance from City: 8.2 km
  • VFR: Yes
  • IFR: Yes

Runways

Runway 03/21

  • Designation: 03/21
  • Dimensions: 7200 X 150
  • Surface: CON
  • PCN: N/A
  • Lighting: YES
  • NAVAIDs: VORTAC, NDB
  • Approach Types: ILS OR LOC RWY 21, RNAV (GPS) RWY 03, RNAV (GPS) RWY 21
  • Remarks: N/A

Runway 14/32

  • Designation: 14/32
  • Dimensions: 5846 X 150
  • Surface: CON
  • PCN: N/A
  • Lighting: YES
  • NAVAIDs: VORTAC, NDB
  • Approach Types: RNAV (GPS) RWY 14, RNAV (GPS) RWY 32, VOR RWY 14, VOR RWY 32
  • Remarks: N/A

Runway 18/36

  • Designation: 18/36
  • Dimensions: 9005 X 150
  • Surface: CON
  • PCN: N/A
  • Lighting: YES
  • NAVAIDs: VORTAC, NDB
  • Approach Types: ILS OR LOC RWY 18, ILS OR LOC/DME RWY 36, ILS RWY 36 (SA CAT I), ILS RWY 18 (SA CAT I - II), ILS RWY 36 (CAT II - III), RNAV (GPS) RWY 18, RNAV (GPS) RWY 36, HI-TACAN RWY 18, HI-TACAN RWY 36
  • Remarks: N/A
Source: FAA terminal procedures (d-TPP), cycle 2610, valid to 2026-10-29 09:01 UTC

See all airports with ILS approaches in United States →

Frequencies

  • Tower: 119.300 MHz
  • Ground: 121.900 MHz
  • Operations: 119.300, 121.500, 122.950, 243.000 MHz
  • Traffic/Approach: 318.100, 350.300 MHz
  • ATIS: 124.650 MHz

Operation Hours

Monday Open 24 hours
Tuesday Open 24 hours
Wednesday Open 24 hours
Thursday Open 24 hours
Friday Open 24 hours
Saturday Open 24 hours
Sunday Open 24 hours

Dane Co Regl-Truax operates 24 hours (H24). See all 24-hour airports worldwide →

  • Extra Hours On Request: Not recorded
  • Remarks: N/A

Contacts

  • AIS Tel: N/A
  • ARO Tel: N/A
  • MET Tel: N/A
  • Admin Tel: +1 605-246-3390
  • Health Tel: N/A
  • Police Tel: N/A
  • Authorities Tel: N/A
  • Website: N/A
  • Remarks: N/A

Slots / PPR

  • Slot Required: Not recorded
  • PPR Required: Not recorded
  • PPR Contact: N/A
  • Remarks: N/A

Fees

  • Landing Fee: None for non-commercial users Source: FAA NASR airport data, cycle 2026-10-01
  • Parking Fee: Not recorded
  • Handling Mandatory: Not recorded
  • Currency: Not recorded
  • Remarks: Not recorded

Fuel Information

Immigration

Restrictions

  • Curfew Start: N/A
  • Curfew End: N/A
  • Noise Chapter Min: Not recorded
  • Remarks: Not recorded

Alternates

KRFD

  • ICAO: KRFD
  • Name: Chicago/Rockford Intl
  • Distance (NM): 57.7
  • Has IFR: Yes
  • Port of Entry: Yes, with conditions: Landing rights airport: permission to land from CBP needed (19 CFR 122.14); customs needs 2 hours advance notice during business hours, Mon-Fri 0830-1700 (NASR) Source: FAA NASR airport data, cycle 2026-10-01

KMKE

  • ICAO: KMKE
  • Name: Gen Mitchell Intl
  • Distance (NM): 64.3
  • Has IFR: Yes
  • Port of Entry: Yes, with conditions: Landing rights airport: permission to land from CBP needed (19 CFR 122.14) Source: FAA NASR airport data, cycle 2026-10-01

KORD

  • ICAO: KORD
  • Name: -O'Hare Intl
  • Distance (NM): 94.2
  • Has IFR: Yes
  • Port of Entry: Yes, with conditions: Landing rights airport: permission to land from CBP needed (19 CFR 122.14) Source: FAA NASR airport data, cycle 2026-10-01

KLSE

KGRB

  • ICAO: KGRB
  • Name: Austin Straubel Intl
  • Distance (NM): 96.1
  • Has IFR: Yes
  • Port of Entry: Yes, with conditions: Landing rights airport: permission to land from CBP needed (19 CFR 122.14) Source: FAA NASR airport data, cycle 2026-10-01

Airport Services

No services listed for this airport yet.

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United States Permit Requirements

Fast Landing: 1d
  • Overflight Permit: No
  • Landing Permit: Conditional
  • Overflight Lead Time: N/A
  • Landing Lead Time: 60 minutes minimum (eAPIS manifest before departure); recommend 24-48 hours for CBP port notification
Private / GA Operations:

No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures.

View Full United States Permit Details

Active NOTAMs

A3488/26
warning Upcoming
ILS out of service
MSN NAV ILS RWY 36 U/S
2026-10-28 13:00 UTC 2026-10-28 19:00 UTC
A3487/26
warning Upcoming
ILS out of service
MSN NAV ILS RWY 18 U/S
2026-10-28 13:00 UTC 2026-10-28 19:00 UTC
A3488/
warning Upcoming
ILS out of service
MSN NAV ILS RWY 36 U/S
2026-10-28 13:00 UTC 2026-10-28 19:00 UTC

+35 more active NOTAMs

NOTAMs received from the FAA NOTAM feed (last message 2026-10-28 07:45 UTC). This list is built from the feed as NOTAMs are issued and is not checked against the FAA's full list: confirm with FAA NOTAM Search before flight.
View all NOTAMs on Map

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Nearby Airports

0LL4 Flaherty Field 104 NM 72LL Foley Airport 106 NM 8LL2 Eckberg Airport 107 NM KVYS Illinois Valley Regional Airport-Walter A Duncan Field 108 NM IL68 Nettle Creek Landings Airport 109 NM 1LL7 Edwin G. Bennett Airport 109 NM 69IL David Gillespie Airport 110 NM 67IL Mitchell RLA Restricted Landing Area 111 NM

Compare KMSN with 0LL4 side by side →

Airport History

No milestones recorded for Dane Co Regl-Truax yet. Know when it opened, who built it or a notable event? Add it with a source.

Add a historical fact
Frequently Asked Questions
What are the operating hours of KMSN?
Dane Co Regl-Truax operates from 00:00 to 23:59.
What is the tower frequency at KMSN?
The tower frequency at Dane Co Regl-Truax is 119.3 MHz.
What fuel is available at KMSN?
The FAA lists 100LL, Jet A, Jet A++ for public use at Dane Co Regl-Truax. Source: FAA NASR airport data, cycle 2026-10-01.
Does KMSN require landing permits?
It depends on the flight. No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures. Permit details for United States
Where is KMSN located?
Dane Co Regl-Truax (KMSN) is located in Madison, United States.
What is the IATA code for KMSN?
The IATA code for Dane Co Regl-Truax is MSN.
Does KMSN have an ILS approach?
Yes, the FAA publishes ILS (Instrument Landing System) approaches at Dane Co Regl-Truax to runways 18, 21, 36. Source: FAA terminal procedures (d-TPP), cycle 2610, valid to 2026-10-29 09:01 UTC.
Is KMSN a port of entry?
No. No customs designation in 19 CFR 122.13, 122.15 or FAA NASR. Source: 19 CFR 122.13 List of international airports, 2026-10-13.
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