Reference only — not for real-world navigation.
KMSN
Dane County Regional Truax Field · Madison
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
887 ft / 270 m
Transition Altitude
18,000 ft
Primary Channel
TWR 119.30 MHz (MADISON TWR)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
18/36 · 9,005 ft · ConcreteLIGHTED03/21 · 7,200 ft · ConcreteLIGHTED14/32 · 5,846 ft · ConcreteLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Dane County Regional Truax Field (KMSN), located in Madison, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 3 active runways with a maximum elevation of 887 ft. Instrument approaches (IFR) are supported with verified ILS frequencies and identifiers for precision landings.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.
Full Name
Dane County Regional Truax Field
ICAO / IATA
KMSN / MSN
Municipality
Madison
Country
Region
US-WI — Wisconsin
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
887 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 18 / 36
ILS EQUIPPEDLIGHTED
Runway Length: 9,005 ft / 2,745 m
Runway Width: 150 ft / 46 m
Surface Type: Concrete
Heading: 181.9° / 1.9°
Runway Width: 150 ft / 46 m
Surface Type: Concrete
Heading: 181.9° / 1.9°
RWY 18 (181.9°)
110.10 MHz
IDENT: DSZ | CRS: 185°
RWY 36 (1.9°)
110.10 MHz
IDENT: MSN | CRS: 5°
Runway 03 / 21
ILS EQUIPPEDLIGHTED
Runway Length: 7,200 ft / 2,195 m
Runway Width: 150 ft / 46 m
Surface Type: Concrete
Heading: 28.8° / 208.8°
Runway Width: 150 ft / 46 m
Surface Type: Concrete
Heading: 28.8° / 208.8°
RWY 03 (28.8°)
No ILS / Visual Only
RWY 21 (208.8°)
111.55 MHz
IDENT: DQJ | CRS: 214°
Runway 14 / 32
LIGHTED
Runway Length: 5,846 ft / 1,782 m
Runway Width: 150 ft / 46 m
Surface Type: Concrete
Heading: 137° / 317°
Runway Width: 150 ft / 46 m
Surface Type: Concrete
Heading: 137° / 317°
RWY 14 (137°)
No ILS / Visual Only
RWY 32 (317°)
No ILS / Visual Only
APP MADISON APP
120.10 MHz
ATIS ATIS
124.65 MHz
CLD MADISON CLNC DEL
121.62 MHz
CTAF CTAF
119.30 MHz
DEP MADISON DEP
126.85 MHz
GND MADISON GND
121.90 MHz
MISC ARNG OPS
40.80 MHz
OPS ANG OPS
138.25 MHz
RDO GREEN BAY RDO
122.60 MHz
TWR MADISON TWR
119.30 MHz
UNIC UNICOM
122.95 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026