| Identifier: | GREGG |
| NAS ID: | GREGG |
| Name: | GREGG |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | ILLINOIS |
| ICAO Region: | K5 |
| Latitude: | 40-50-12.960N (40.836900) |
| Longitude: | 089-59-50.620W (-89.997400) |
| Magnetic Variance: | 2.3 W as of 9/30/2025 |
| High ARTCC Area: | ZAU |
| Low ARTCC Area: | ZAU |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| CONTROLLER |
| ENROUTE LOW |
| IAP |