| Navaid Facility ID: | CMY |
| Official Navaid Facility ID: | CMY |
| Navaid Facility Type: | NDB |
| Navaid Name: | Mccoy |
| City: | SPARTA |
| State: | WISCONSIN |
| FAA Region: | |
| Latitude: | 43-56-16.167N (43.9378) |
| Longitude: | 090-38-30.688W (-90.6419) |
| Lat/Long Survey Accuracy: | 1 second or better |
| Owner: | US ARMY |
| Operator: | US ARMY |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | MHW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 2.1 W as of 9/30/2025 |
| ARTCC High Altitude ID (Name): | ZMP (MINNEAPOLIS) |
| ARTCC Low Altitude ID (Name): | ZMP (MINNEAPOLIS) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| CMY | NDB | UNMONITORED WHEN ATCT CLOSED. |
| Navaid ID | Navaid Facility Type | Magnetic Variance | Airspace Fixes |
|---|---|---|---|
| CMY | NDB | 2 W | HURST WI - K5 |
| Navaid ID | Navaid Facility Type | Holding Patterns |
|---|---|---|
| CMY | NDB | MCCOY NDB*WI, Pattern #: 1 |