| Identifier: | OCOSI |
| NAS ID: | OCOSI |
| Name: | OCOSI |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MICHIGAN |
| ICAO Region: | K5 |
| Latitude: | 42-16-29.810N (42.274900) |
| Longitude: | 085-35-15.980W (-85.587800) |
| Magnetic Variance: | 5.7 W as of 9/30/2025 |
| High ARTCC Area: | ZAU |
| Low ARTCC Area: | ZAU |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| SPECIAL DP |
| SPECIAL IAP |