Mertens Airport (Sterling, CO) 3CO2 Cartes IFR (règles des instruments de vol)
| 4 | KSTK | Sterling Muni | Sterling, CO |
| 31 | KAKO | Colorado Plains Rgnl | Akron, CO |
| 32 | KFMM | Fort Morgan Muni | Fort Morgan, CO |
| 38 | KSNY | Sidney Municipal | Sidney, NE |
| 43 | KIBM | Kimball Municipal | Kimball, NE |
