Black Otter Airport (Hortonville, WI) 9WI1 Cartes IFR (règles des instruments de vol)
| 7 | KATW | Appleton Intl | Appleton, WI |
| 20 | KCLI | Clintonville Muni | Clintonville, WI |
| 20 | KPCZ | Waupaca Muni | Waupaca, WI |
| 24 | KOSH | Wittman Rgnl | Oshkosh, WI |
| 27 | KGRB | Green Bay/Austin Straubel Intl | Green Bay, WI |
