O John Clark Restricted Landing Area
Daylight today(Sep 5, 2026, local time)
About 12h 59m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About O John Clark Restricted Landing Area
O John Clark Restricted Landing Area is a closed in Grays Lake, United States. It sits at an elevation of 790 ft (241 m).
Summary generated from this airport’s structured data — reference only.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (0)
No runway data recorded for this airport.
Airspace in this area(1)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| CHICAGO CLASS B AREA D | Class B | Controlled | 3600 ft MSL | 10000 ft MSL |
Approximate bounding-box match from OpenAIP · all United States airspace. Reference only — consult official charts for exact boundaries and status.
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Obstacle | 499 ft | 866 ft | — |
| Obstacle | — | 666 ft | — |
| Obstacle | — | 663 ft | — |
| Obstacle | — | 692 ft | — |
| Obstacle | — | 692 ft | — |
| Obstacle | — | 702 ft | — |
| Obstacle | — | 574 ft | — |
| Obstacle | — | 574 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Frequently asked questions
Where is O John Clark Restricted Landing Area located?
O John Clark Restricted Landing Area is closed located in Grays Lake, United States, at an elevation of 790 ft (241 m).
Is the information on this page suitable for flight planning?
No. O John Clark Restricted Landing Area data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.