| Frequencies Updated (Updated: 1, Deleted 0) for Muskegon County Airport (MKG) | Ronaldski | 2018-03-14 12:53:06 |
| Added Frequency 453.37500 (Airport Operations ) | Starcom21 | 2012-10-06 15:43:17 |
| Added Subcategory: Airport Authority | Starcom21 | 2012-10-06 15:42:29 |
| Changed category from (Muskegon County Airport (MKG) 60) to (Muskegon County Airport (MKG) 99) | Starcom21 | 2012-10-06 15:42:12 |
| Frequencies Updated (Updated: 5, Deleted 0) for Civilian Operations | Starcom21 | 2011-08-17 21:16:20 |
| Default Location Data Updated to 43.285203 / -86.130066 / 18.841217283824 | Starcom21 | 2011-08-17 21:14:40 |
| Sub-category (Civilian Ops Sort 99) changed to (Civilian Operations Sort: 11) | Starcom21 | 2011-08-17 21:13:59 |
| Sub-category (Military Ops Sort 99) changed to (Military Operations Sort: 12) | Starcom21 | 2011-08-17 21:12:52 |
| Sub-category (Civilian Ops Sort 99) changed to (Civilian Ops Sort: 99) | Starcom21 | 2011-08-17 21:12:32 |
| Default Location Data Updated to 43.168879 / -86.237526 / 0.8251809429760001 | Starcom21 | 2011-08-17 21:11:58 |
| Category: (Muskegon County Airport (MKG)) migrated to Agency: (Airports) | Starcom21 | 2011-08-17 21:08:44 |
