Airport information
- FAA LID
- IL38
- Coordinates
- 41.7670, -88.5320
- Elevation
- 705 ft MSL
- Magnetic variation
- 0W
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- KANKAKEE
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1973/03
- Distance from city
- 1 SE
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:45 AM | 09:45Z |
| Sunrise | 05:19 AM | 10:19Z |
| Sunset | 08:32 PM | 01:32Z |
| Evening civil twilight Loggable night begins | 09:07 PM | 02:07Z |
Plan a flight from IL38
Traffic pattern
- Landing
- Rwy E
- Pattern
- left (turns left)
- TPA
- 1,700 ft MSL (≈1,000 AGL)
Enter the left downwind for Rwy E at 1,700 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway E/W
2,600 ft × 70 ft · Turf (Good)- Heading
- n/a
- Traffic pattern
- Left
- Heading
- n/a
- Traffic pattern
- Right
| Runway | Length | Your margin |
|---|---|---|
| E/W | 2,600 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| DPA · Du Page | VOR-DME | 108.40 | r226° / 11 NM |
| JOT · Joliet | VORTAC | 112.30 | r322° / 16.3 NM |
| OBK · Northbrook | VOR-DME | 113.00 | r226° / 37.6 NM |
VFR sectional
No published instrument procedures or Chart Supplement for IL38. VFR sectional link above.
Ownership & management
Remarks FAA
- 3 NM 260 DEG FROM AURORA MUNI ARPT.
- FOR CD CTC CHICAGO APCH AT 847-289-0926.
Nearby airports
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 IL38 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.
About IL38
J Maddock Airport (IL38) is an airport in Big Rock, IL, at 705 ft MSL. It has 1 runway, the longest 2,600 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for IL38, refreshed from the Aviation Weather Center and FAA NASR.
Does IL38 have a control tower?
No. J Maddock Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at IL38?
J Maddock Airport has 1 runway; the longest is 2,600 ft. See the Runways tab for headings, surface, and lighting.
Where is IL38?
J Maddock Airport is in Big Rock, IL, at an elevation of 705 ft MSL. Coordinates: 41.7670, -88.5320.
Fly out of IL38 often?
Save IL38 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.