| Navaid Facility ID: | MNC |
| Official Navaid Facility ID: | MNC |
| Navaid Facility Type: | NDB |
| Navaid Name: | Mason County |
| City: | SHELTON |
| State: | WASHINGTON |
| FAA Region: | |
| Latitude: | 47-14-53.094N (47.2481) |
| Longitude: | 123-05-10.890W (-123.0864) |
| Lat/Long Survey Accuracy: | NOS |
| Owner: | PORT OF SHELTON |
| Operator: | PORT OF SHELTON |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | MHW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 15.1 E as of 4/16/2025 |
| ARTCC High Altitude ID (Name): | ZSE (SEATTLE) |
| ARTCC Low Altitude ID (Name): | ZSE (SEATTLE) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| MNC | NDB | 3RD PARTY SURVEY |
| MNC | NDB | NDB UNUSABLE 280-340 BEYOND 20 NM. |
| MNC | NDB | NDB UNMON. |