Copalis State Airport (Copalis, WA) S16 Cartes IFR (règles des instruments de vol)
| 17 | KHQM | Bowerman Fld | Hoquiam, WA |
| 49 | KSHN | Sanderson Fld | Shelton, WA |
| 62 | KOLM | Olympia Rgnl | Olympia, WA |
| 66 | KCLS | Chehalis-Centralia | Chehalis, WA |
| 70 | KAST | Astoria Rgnl | Astoria, OR |
