| Navaid Facility ID: | MDO |
| Official Navaid Facility ID: | MDO |
| Navaid Facility Type: | VOR-DME |
| Navaid Name: | Middleton Island |
| City: | MIDDLETON ISLAND |
| State: | ALASKA |
| FAA Region: | |
| Latitude: | 59-25-18.496N (59.4218) |
| Longitude: | 146-21-00.054W (-146.35) |
| Lat/Long Survey Accuracy: | NOS |
| Owner: | FEDERAL AVIATION ADMIN |
| Operator: | FEDERAL AVIATION ADMIN |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | H-VORW/DME |
| Hours of Operation: | 24 |
| Magnetic Variance: | 15.4 E as of 9/30/2025 |
| ARTCC High Altitude ID (Name): | ZAN (ANCHORAGE) |
| ARTCC Low Altitude ID (Name): | ZAN (ANCHORAGE) |
| Navaid ID | Navaid Facility Type | Holding Patterns |
|---|---|---|
| MDO | VOR-DME | MIDDLETON ISLAND VOR/DME*AK, Pattern #: 1 |