| FAA Information Effective: | 2013-12-12 | 
| Airport Identifier: | LL91 | 
| Airport Status: | Operational | 
| Longitude/Latitude: | 089-27-10.4140W/42-24-57.0540N -89.452893/42.415848 (Estimated) | 
| Elevation: | 870 ft / 265.18 m (Estimated) | 
| Land: | 0 acres | 
| From nearest city: | 0 nautical miles N of Rock City, IL | 
| Location: | Stephenson County, IL | 
| Magnetic Variation: | 01E (1985) | 
| Ownership: | Privately owned | 
| Owner: | William L. Hillman | 
| Address: | 8592 Il 75e Rock City, IL 61070 | 
| Phone number: | 815-865-5842 | 
| Manager: | William L. Hillman | 
| Address: | 8592 Il 75e Rock City, IL 61070 | 
| Phone number: | 815-865-5842 | 
| Airport Use: | Private | 
| Segmented Circle: | No | 
| Control Tower: | No | 
| Sectional chart: | Chicago | 
| Region: | AGL - Great Lakes | 
| Boundary ARTCC: | ZAU - Chicago | 
| Tie-in FSS: | IKK - Kankakee | 
| FSS on Airport: | No | 
| FSS Toll Free: | 1-800-WX-BRIEF | 
| Dimension: | 1600 x 70 ft / 487.7 x 21.3 m | 
| Surface: | TURF, | 
| Runway 07 | Runway 25 | |
|---|---|---|
| Traffic Pattern: | Left | Left | 
| Obstruction: | 25 ft trees, 500.0 ft from runway | 25 ft plines, 50.0 ft from runway |