| Identifier: | MMASH |
| NAS ID: | MMASH |
| Name: | MMASH |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | SOUTH DAKOTA |
| ICAO Region: | K3 |
| Latitude: | 45-03-44.000N (45.062200) |
| Longitude: | 103-17-58.000W (-103.299400) |
| Magnetic Variance: | 7.1 E as of 9/30/2025 |
| High ARTCC Area: | ZLC |
| Low ARTCC Area: | ZLC |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| CONTROLLER |
| ENROUTE HIGH |
| ENROUTE LOW |