| Frequencies Updated (Updated: 1, Deleted 0) for Portland Troutdale Airport (TTD) | lowboy654 | 2021-03-12 14:47:12 |
| Frequencies Updated (Updated: 8, Deleted 0) for Portland Troutdale Airport (TTD) | kd7jfv | 2021-03-11 11:46:35 |
| Added Frequency 135.625 (ATIS) | joescanner | 2009-02-09 12:53:48 |
| Tagged 1 Frequencies with (Aircraft) | mciupa | 2008-08-04 19:48:12 |
| Frequencies updated | joescanner | 2007-07-08 04:09:26 |
| Added Frequency 124.35 | joescanner | 2007-07-08 04:09:12 |
| Added Frequency 118.1 | joescanner | 2007-07-08 04:08:57 |
| Added Frequency 254.3 | joescanner | 2007-07-08 04:08:44 |
| Added Frequency 120.9 | joescanner | 2007-07-08 04:08:37 |
| Added Frequency 121.8 | joescanner | 2007-07-08 04:08:25 |
| Added Frequency 122.95 | joescanner | 2007-07-08 04:08:16 |
| Added Frequency 120.9 | joescanner | 2007-07-08 04:08:08 |
| Sub-category Air Traffic Control changed | joescanner | 2007-07-08 04:07:54 |
| Category Portland Troutdale Airport (TTD) changed | joescanner | 2007-07-08 04:07:46 |
| Category Air Traffic Control added | joescanner | 2007-07-08 04:07:31 |
