| Added Frequency 130.675 (Delta Airlines) | LAflyer | 2022-11-10 19:00:52 |
| Added Frequency 131.8 (ARINC San Francisco Radio ) | LAflyer | 2022-11-10 19:00:14 |
| Changed Subcategory Details For: Airline Operations | LAflyer | 2022-11-10 18:59:30 |
| Added Subcategory: Airline Operations | LAflyer | 2022-11-10 18:58:54 |
| Frequencies Updated (Updated: 2, Deleted 0) for Great Falls International Airport (KGTF) | PJH | 2019-07-02 14:44:13 |
| Sort order changed to from 0 for subcat: Air Traffic Control | PJH | 2019-07-02 14:43:31 |
| Frequencies Updated (Updated: 4, Deleted 0) for Great Falls International Airport (KGTF) | PJH | 2019-07-02 14:43:27 |
| Changed Subcategory Details For: Air Traffic Control | PJH | 2019-07-02 14:43:04 |
| Changed Subcategory Details For: Airport Authority | PJH | 2019-07-02 14:42:32 |
| Subcategory: (Great Falls International Airport Auth.) migrated to Category (Great Falls International Airport (KGTF)) in Agency | PJH | 2019-07-02 14:41:40 |
| Agency: Great Falls International Airport (KGTF) changed from Airports (Aircraft / Airport) to Great Falls International Airport | PJH | 2019-07-02 14:41:00 |
| Frequencies Updated (Updated: 4, Deleted 0) for Great Falls International Airport (KGTF) | blantonl | 2018-07-25 08:43:13 |
| Tagged 10 Frequencies with (Aircraft) | blantonl | 2018-07-25 08:42:55 |
| Frequencies Updated (Updated: 10, Deleted 0) for Great Falls International Airport (KGTF) | blantonl | 2018-07-25 08:42:51 |
| 10 Frequencies imported | blantonl | 2018-07-25 08:42:16 |
| Added Subcategory: Air Traffic Control | blantonl | 2018-07-25 08:40:30 |
| Added category (Great Falls International Airport (KGTF) 99) | blantonl | 2018-07-25 08:40:19 |
