| Frequencies Updated (2) | Starcom21 | 2025-01-05 19:06:45 |
| Frequencies Imported (3) | Starcom21 | 2025-01-05 19:06:31 |
| Updated Subcategory: (Air Traffic Control) | Starcom21 | 2025-01-05 19:02:57 |
| Updated Subcategory: (Air Traffic Control) | Starcom21 | 2024-06-29 21:51:23 |
| Updated Agency Location Details | Starcom21 | 2024-06-29 21:51:10 |
| Added Frequency 121.75 (Clearance Delivery) | wise871 | 2014-01-07 02:24:13 |
| Added Frequency 123.0 (CTAF/UNICOM) | wise871 | 2014-01-07 02:23:44 |
| Added Subcategory: Air Traffic Control | wise871 | 2014-01-07 02:23:12 |
| Added category (St Clair County Airport (PLR) 99) | wise871 | 2014-01-07 02:22:35 |
