West Buttercreek Airport (Echo, OR) OL02 Cartes IFR (règles des instruments de vol)
| 13 | KHRI | Hermiston Muni | Hermiston, OR |
| 21 | 9S9 | Lexington | Lexington, OR |
| 26 | KPDT | Eastern Oregon Rgnl | Pendleton, OR |
| 43 | KPSC | Tri-Cities | Pasco, WA |
| 44 | KRLD | Richland | Richland, WA |
