J Maddock Private
IL38 · Big Rock, IL · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-18 · night begins 07:27 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:09 AM | 11:09Z |
| Sunrise | 06:37 AM | 11:37Z |
| Sunset | 06:59 PM | 23:59Z |
| Evening civil twilight Loggable night begins | 07:27 PM | 00:27Z |
Plan a flight from IL38
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY ELEFT traffic
- Heading
- 090° mag · 090° true
- Dimensions
- 2,600 × 70 ft
- TPA
- 1,700 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
Enter the left downwind (heading 270°) on the 45° at 1,700 ft MSL (≈1,000 AGL).
More details — RWY E
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| E/W | 2,600 ft |
Prefer one flat page? Full runway details for IL38 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the IL38 kneeboard →
Comms & NavAids
Nearby navigation aids
DPA 114.55 · JOT 112.30 · OBK 113.00
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| DPA · Dupage | VOR/DME | 114.55 · 92Y | Low | r226° / 11 NM |
| JOT · Joliet | VOR/DME | 112.30 · 70X | High | r322° / 16.3 NM |
| OBK · Northbrook | VOR/DME | 113.00 · 77X | High | r226° / 37.6 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for IL38 — open it on the VFR sectional →
Airport info
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 · 1-800-WX-BRIEF
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1973/03
- Distance from city
- 1 SE
Ownership & management 2 contacts
Remarks FAA · 1 notes
General
- FOR CD CTC CHICAGO APCH AT 847-289-0926.
Nearby airports
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Also nearby: IL85 Oakfield (private) (5 NM) · 0LL6 Gord (private) (5 NM) · 0C2 Hinckley (8 NM) · 08IL Marshall Farms (private) (8 NM) · IS65 Woodlake Landing (private) (9 NM)
About IL38
J Maddock (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 is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at IL38?
J Maddock has 1 runway; the longest is 2,600 ft. See the Runways section for headings, surface, and lighting.
Where is IL38?
J Maddock is in Big Rock, IL, at an elevation of 705 ft MSL. Coordinates: 41.7670, -88.5320.
More about IL38
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.
Something here wrong or out of date? Report a data problem.