Roca Grande Rla Private
51IL · 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 night2026-11-02 · night begins 05:17 PM
| Event | Local (CST) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:59 AM | 11:59Z |
| Sunrise | 06:28 AM | 12:28Z |
| Sunset | 04:48 PM | 22:48Z |
| Evening civil twilight Loggable night begins | 05:17 PM | 23:17Z |
Plan a flight from 51IL
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Runways
RWY 27LEFT traffic
- Heading
- 269° true
- Dimensions
- 2,721 × 100 ft
- TPA
- 1,800 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
- CTAF
- 122.9
Enter the left downwind (heading 089°) on the 45° at 1,800 ft MSL (≈1,000 AGL).
More details — RWY 27
- Threshold elev
- 762 ft
- Markings
- none
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 09/27 | 2,721 ft |
Prefer one flat page? Full runway details for 51IL → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 51IL kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
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 | r240° / 13 NM |
| JOT · Joliet | VOR/DME | 112.30 · 70X | High | r316° / 19.4 NM |
| OBK · Northbrook | VOR/DME | 113.00 · 77X | High | r231° / 39.1 NM |
Prefer one flat list? All 51IL frequencies →
Charts & procedures
No published instrument procedures or Chart Supplement for 51IL — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 51IL
- Coordinates
- 41.7880, -88.6066
- Elevation
- 762 ft MSL
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- KANKAKEE · 1-800-WX-BRIEF
- Segmented circle
- No
- Activated
- 2026/08
- Distance from city
- 2 NE
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Ownership & management 2 contacts
Nearby airports
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Also nearby: IL38 J Maddock (private) (4 NM) · IL85 Oakfield (private) (4 NM) · 0C2 Hinckley (4 NM) · 08IL Marshall Farms (private) (5 NM) · 0LL6 Gord (private) (5 NM)
About 51IL
Roca Grande Rla (51IL) is an airport in Big Rock, IL, at 762 ft MSL. It has 1 runway, the longest 2,721 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 51IL, refreshed from the Aviation Weather Center and FAA NASR.
Does 51IL have a control tower?
No. Roca Grande Rla is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 51IL?
Roca Grande Rla has 1 runway; the longest is 2,721 ft. See the Runways section for headings, surface, and lighting.
Where is 51IL?
Roca Grande Rla is in Big Rock, IL, at an elevation of 762 ft MSL. Coordinates: 41.7880, -88.6066.
More about 51IL
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 51IL 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.