| Added Frequency 131.8 (ARINC San Francisco Radio ) | LAflyer | 2022-11-10 18:56:58 |
| Changed Subcategory Details For: Airline Operations | LAflyer | 2022-11-10 18:56:17 |
| Added Subcategory: Airline Operations | LAflyer | 2022-11-10 18:55:43 |
| Tagged 2 Frequencies with (Aircraft) | blantonl | 2019-06-26 09:43:48 |
| Added Frequency 123.3 (Edwards Jet Center) | LAflyer | 2012-12-30 13:21:38 |
| Added Subcategory: Fixed Base Operators | LAflyer | 2012-12-30 13:20:50 |
| Added Frequency 172.9 (Transportation Security Administration (TSA)) | ericcarlson | 2011-06-06 21:14:28 |
| Subcategory (Federal) added to (Billings Logan International Airport (BIL)) Category | ericcarlson | 2011-06-06 21:14:00 |
| Frequencies updated | ericcarlson | 2006-12-02 13:44:32 |
| Frequencies imported | ericcarlson | 2006-09-19 14:37:44 |
| Sub-category Air Traffic Control changed | ericcarlson | 2006-09-19 14:36:49 |
| Category Billings Logan International Airport (BIL) added | ericcarlson | 2006-09-19 14:36:43 |
