| Navaid Facility ID: | ITU |
| Official Navaid Facility ID: | ITU |
| Navaid Facility Type: | NDB |
| Navaid Name: | Truly |
| City: | GREAT FALLS |
| State: | MONTANA |
| FAA Region: | |
| Latitude: | 47-21-57.249N (47.3659) |
| Longitude: | 111-22-22.308W (-111.3729) |
| Lat/Long Survey Accuracy: | NOS |
| Owner: | FEDERAL AVIATION ADMIN |
| Operator: | FEDERAL AVIATION ADMIN |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | HW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 11.7 E as of 6/8/2025 |
| ARTCC High Altitude ID (Name): | ZLC (SALT LAKE CITY) |
| ARTCC Low Altitude ID (Name): | ZLC (SALT LAKE CITY) |