King's Airport (Milton/Freewater, OR) 9OR4 Cartes IFR (règles des instruments de vol)
| 14 | KALW | Walla Walla Rgnl | Walla Walla, WA |
| 25 | KPDT | Eastern Oregon Rgnl | Pendleton, OR |
| 40 | KHRI | Hermiston Muni | Hermiston, OR |
| 40 | KPSC | Tri-Cities | Pasco, WA |
| 48 | KRLD | Richland | Richland, WA |
