| Identifier: | YIYSU |
| NAS ID: | YIYSU |
| Name: | YIYSU |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | WASHINGTON |
| ICAO Region: | K1 |
| Latitude: | 47-11-10.450N (47.186200) |
| Longitude: | 122-50-26.970W (-122.840800) |
| 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 |
| Navaid ID | Navaid Facility Type | Radial / DME Distance |
|---|---|---|
| OLM | VORTAC | /13.12 |
| ILS ID | ILS Facility Type | Direction / Course |
|---|---|---|
| OLM | ILS | r356.31 |
| IAP |