| Identifier: | AMPSO |
| NAS ID: | AMPSO |
| Name: | AMPSO |
| Fix Type: | Military |
| Fix Use: | |
| State: | WASHINGTON |
| ICAO Region: | K1 |
| Latitude: | 47-18-53.230N (47.314800) |
| Longitude: | 122-28-39.450W (-122.477600) |
| Magnetic Variance: | 15 E as of 9/30/2025 |
| High ARTCC Area: | ZSE |
| Low ARTCC Area: | ZSE |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| MILITARY IAP |