| Identifier: | AMSIW |
| NAS ID: | AMSIW |
| Name: | AMSIW |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | SOUTH DAKOTA |
| ICAO Region: | K3 |
| Latitude: | 44-14-43.430N (44.245400) |
| Longitude: | 100-31-42.230W (-100.528400) |
| Magnetic Variance: | 5.2 E as of 9/30/2025 |
| High ARTCC Area: | ZMP |
| Low ARTCC Area: | ZMP |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| IAP |