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KDEC

Decatur Airport · Decatur

Key Facts

Essential technical summary for MSFS 2020/2024 and X-Plane.

ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
682 ft / 208 m
Transition Altitude
18,000 ft
Primary Channel
TWR 118.90 MHz (TWR)
Live Conversion
inHg
hPa
Flight Planning
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Welcome to the technical flight briefing for Decatur Airport (KDEC), located in Decatur, 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 682 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.

Airport Details

Full geographical and organizational metadata.

Full Name
Decatur Airport
ICAO / IATA
KDEC / DEC
Municipality
Decatur
Country
Region
US-IL — Illinois
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
682 ft
Wikipedia

Pilot Toolbox

External charts, live tracking and weather reports.

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Runways & ILS Approach Data

Detailed dimensions and instrument landing frequencies.

Runway 06 / 24
ILS EQUIPPEDLIGHTED
Runway Length: 8,496 ft / 2,590 m
Runway Width: 150 ft / 46 m
Surface Type: PEM
Heading: 59.1° / 239.1°
RWY 06 (59.1°)
110.90 MHz
IDENT: DEC | CRS: 60°
RWY 24 (239.1°)
No ILS / Visual Only
Runway 12 / 30
LIGHTED
Runway Length: 6,799 ft / 2,072 m
Runway Width: 150 ft / 46 m
Surface Type: PEM
Heading: 119° / 299°
RWY 12 (119°)
No ILS / Visual Only
RWY 30 (299°)
No ILS / Visual Only
Runway 18 / 36
LIGHTED
Runway Length: 5,299 ft / 1,615 m
Runway Width: 150 ft / 46 m
Surface Type: Asphalt
Heading: 179.1° / 359.1°
RWY 18 (179.1°)
No ILS / Visual Only
RWY 36 (359.1°)
No ILS / Visual Only

Communication Frequencies

Air traffic control and advisory channels.

A/D CHAMPAIGN APP/DEP
132.85 MHz
ATIS ATIS
126.35 MHz
CTAF CTAF
118.90 MHz
GND GND
121.75 MHz
RDO ST LOUIS RDO
122.30 MHz
TWR TWR
118.90 MHz
UNIC UNICOM
122.95 MHz

Nearby Airports

Alternative airports in the vicinity (km & nm).

KCMIILS
University of Illinois Willard Airport
55 km / 30 nm
KSPIILS
Abraham Lincoln Capital Airport
69 km / 37 nm
KBMIILS
Central Illinois Regional Airport at Bloomington-Normal
72 km / 39 nm
KPIAILS
General Wayne A. Downing Peoria International Airport
116 km / 63 nm
KHUFILS
Terre Haute Regional Airport, Hulman Field
140 km / 76 nm

Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026