| Identifier: | MADEF |
| NAS ID: | MADEF |
| Name: | MADEF |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MONTANA |
| ICAO Region: | K1 |
| Latitude: | 46-55-08.080N (46.918900) |
| Longitude: | 114-06-49.350W (-114.113700) |
| Magnetic Variance: | 12.7 E as of 9/30/2025 |
| High ARTCC Area: | ZLC |
| Low ARTCC Area: | ZLC |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| Navaid ID | Navaid Facility Type | Radial / DME Distance |
|---|---|---|
| MSO | VOR-DME | r285.00/1.4 |
| IAP |