Decatur Airport
DEC · KDEC · Decatur, IL · Towered · Print kneeboard
FAA airport diagramView full size ↓ Nearby now
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 08:36 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:27 AM | 10:27Z |
| Sunrise | 05:57 AM | 10:57Z |
| Sunset | 08:06 PM | 01:06Z |
| Evening civil twilight Loggable night begins | 08:36 PM | 01:36Z |
Plan a flight from KDEC
Past 24 hours category · wind · ceiling · visibility trends
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Density altitude today projected curve · departure window · takeoff roll
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 12LEFT traffic
- Heading
- 120° mag · 119° true
- Dimensions
- 6,799 × 150 ft
- TPA
- 1,700 ft MSL (≈1,000 AGL) · standard
- Surface
- ASPH-CONC
- CTAF
- 118.9
More details — RWY 12
- Threshold elev
- 678 ft
- Markings
- nonprecision
- Approach obstacle
- Tree, 43 ft, 1,174 ft from threshold, 288 ft R of centerline — 22:1 slope to clear
- TDZ elevation
- 680 ft
- Declared TORA/TODA/ASDA/LDA
- 6,799 / 6,799 / 6,799 / 6,799 ft
- LAHSO
- 4,450 ft (hold short of 06/24)
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 06/24 | 8,496 ft | |
| 12/30 | 6,799 ft | |
| 18/36 | 5,298 ft |
Prefer one flat page? Full runway details for KDEC → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KDEC kneeboard →
Comms & NavAids
Communication frequencies
Before taxi
“Decatur”Taxi & takeoff
“Decatur”Departure & arrival
“Champaign”Also
ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).
By procedure & sector (3 frequencies)
| Frequency | Used by |
|---|---|
| 290.225 | APCH/P DEP/P |
| 291.775 | GND/P · LCL/P |
| 353.95 | DANVILLE RCAG (LOW) |
Source: FAA NASR (current 28-day cycle).
Instrument landing systems
RWY 06
| Runway | ILS |
|---|---|
| RWY 06 | ILS/DME · CAT I · LOC 110.9 (DEC) · GS 3.00° |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
AXC 117.20 · CMI 115.75 · SPI 112.70
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| AXC · Adders | VORTAC | 117.20 · 119X | High | r353° / 5.8 NM |
| CMI · Champaign | VORTAC | 115.75 · 104Y | Low | r243° / 29.7 NM |
| SPI · Spinner | VORTAC | 112.70 · 74X | High | r091° / 37.4 NM |
Prefer one flat list? All KDEC frequencies →
Charts & procedures
Lowest minimums here: ILS with vertical guidance · VFR sectional →
Airport info
From the field
Do you run KDEC, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.
Airport information
- ICAO / IATA
- KDEC / DEC
- Coordinates
- 39.8346, -88.8657
- Elevation
- 682 ft MSL
- Magnetic variation
- 1W
- Sectional chart
- ST LOUIS
- Airport use
- Public
- Control tower
- Yes
- Tower hours
- 0600-2200
- Airspace
- Class D · CLASS D SVC 0600-2200; OTHER TIMES CLASS G
- Weather station
- ASOS · 126.35 · ☎ 217-429-0052
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- SAINT LOUIS · 122.3 · 1-800-WX-BRIEF
- FSS outlet
- RCO → Saint Louis Radio (24)
- NOTAM facility
- DEC
- Attendance
- MON-FRI ALL; SAT SUN 0700-2130
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- FAR 139 class
- I A
- GPS MON airport
- Yes
- Activated
- 1945/03
- Distance from city
- 4 E
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MALSR RWY 06; MIRL RWY 12/30 & 18/36; TWY LGTS RWY 06 - CTAF. WHEN ATCT CLSD HIRL RWY 06/24 PRESET LOW INTST; INCR INTST - CTAF.; SNOW REMOVAL OPS WINTER MONTHS MNT CTAF. LNDG/DEP ACFT USE CTAF WHEN ATCT CLSD. on 118.9 — Chart Supplement ↗
Runway lighting aids — 06: MALSR · 24: VASI · 30: 4-light PAPI (left) · 18: 4-light PAPI (left) · 36: VASI.
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Fuel available
- 100LL, Jet A
- Parking
- tiedowns, hangars
- Other services
- Air freight, Charter, Instruction, Rental, Aircraft sales
Ownership & management 2 contacts
Remarks FAA · 15 notes
General
- N RAMP FROM HNGR B TO HNGR G CLSD TO ACFT OVR 12500 LBS.
- WHEN ATCT CLSD BE ALERT FOR VEHICULAR TFC IN ARPT OPS AREAS.
- BIRDS & WILDLIFE ON & INVOF ARPT.
- GLIDER OPS RWY 06 & 30 ONLY, RQR WRITTEN APVL - CTC AMGR. SOD OPS NA.
- SNOW REMOVAL OPS WINTER MONTHS MNT CTAF. LNDG/DEP ACFT USE CTAF WHEN ATCT CLSD.
- FOR US CUSTOMS CALL 217-425-4803.
- RWY 12 & 18 AND RWY 06 & 36 CLOSELY ALIGNED. VFY CORRECT RWY AND COMPASS HDG PRIOR TO DEP.
- TWY A RSTRD NORTH OF TWY G TO ACFT WITH WINGSPAN OF 86FT OR LESS WITHOUT PPR - CTC AMGR.
- FOR CD IF UNA TO CTC ON FSS FREQ, CTC CHICAGO ARTCC 630-906-8921.
Runways
- PCR VALUE: 3280/F/D/X/T
- PCR VALUE: 3250/F/D/X/T
- PCR VALUE: 1200/F/D/X/T
- SECONDARY LAHSO 8000 FT HOLD SHORT OF RWY 18/36.
Lighting
- ACTVT MALSR RWY 06; MIRL RWY 12/30 & 18/36; TWY LGTS RWY 06 - CTAF. WHEN ATCT CLSD HIRL RWY 06/24 PRESET LOW INTST; INCR INTST - CTAF.
Contact
- 217-428-8836
Embed KDEC weather on your site free widget for schools, clubs & FBOs
Live METAR, flight category, and favored runway for KDEC — paste this into your website's HTML. It updates automatically and stays free.
More widgets — crosswind, E6B, density altitude — on the embed page.
Nearby airports
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Also nearby: 5IS4 Corman Acres Airport (private) (6 NM) · IL32 Adkisson Airport (private) (12 NM) · 5LL1 Hilvety Airport (private) (12 NM) · 1IS3 Cribbet Airport (private) (12 NM) · 5LL2 Paul E. Kroenlein Airport (private) (14 NM) · 3IS3 Noland Farms Airport (private) (14 NM)
About KDEC
Decatur Airport (DEC · KDEC) is an airport in Decatur, IL, at 682 ft MSL. It has 3 runways, the longest 8,496 ft, with a control tower. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KDEC, refreshed from the Aviation Weather Center and FAA NASR.
Does KDEC have a control tower?
Yes. Decatur Airport has an operating FAA control tower. See the Comms & NavAids section for tower and ground frequencies.
What is the longest runway at KDEC?
Decatur Airport has 3 runways; the longest is 8,496 ft. See the Runways section for headings, surface, and lighting.
Where is KDEC?
Decatur Airport is in Decatur, IL, at an elevation of 682 ft MSL. Coordinates: 39.8346, -88.8657.
Fly out of KDEC often?
Save KDEC as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
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 KDEC 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.