| ALASKA | CAP5 | VICTORIA, BC VICTORIA SEAPLANE |
| ALASKA | CAL6 | COMOX BC COMOX SEAPLANE |
| ALASKA | CAJ4 | ANAHIM LAKE |
| COLORADO | CAG | CRAIG-MOFFAT |
| IOWA | CAV | CLARION MUNI |
| MAINE | CAR | CARIBOU MUNI |
| MICHIGAN | CAD | CADILLAC WEXFORD CO |
| NEW MEXICO | CAO | CLAYTON MUNI ARPK |
| OHIO | CAK | AKRON-CANTON RGNL |
| SOUTH CAROLINA | CAE | COLUMBIA METROPOLITAN |