| Navaid Facility ID: | IHM |
| Official Navaid Facility ID: | IHM |
| Navaid Facility Type: | NDB |
| Navaid Name: | Mansfield |
| City: | MANSFIELD |
| State: | MASSACHUSETTS |
| FAA Region: | |
| Latitude: | 42-00-09.994N (42.0028) |
| Longitude: | 071-11-49.581W (-71.1971) |
| Lat/Long Survey Accuracy: | NOS |
| Owner: | MASS AERO COM |
| Operator: | MASS AERO COM |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | MHW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 13.9 W as of 9/30/2025 |
| ARTCC High Altitude ID (Name): | ZBW (BOSTON) |
| ARTCC Low Altitude ID (Name): | ZBW (BOSTON) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| IHM | NDB | NDB LOCATED ON AIRPORT 850' NORTHEAST OF RWY 14/32 CENTERLINE AND 2400' FROM RWY 32 THRESHOLD. |
| IHM | NDB | NDB UNMONITORED 2200-1300. |