| CALIFORNIA | CNO | CHINO |
| IOWA | CNC | CHARITON MUNI |
| KANSAS | CNK | CONCORDIA BLOSSER MUNI |
| KANSAS | CNU | CHANUTE MARTIN JOHNSON |
| MINNESOTA | CNB | CANBY MYERS FLD |
| NEBRASKA | CNP | CHAPPELL BILLY G RAY FLD |
| NEW HAMPSHIRE | CNH | CLAREMONT MUNI |
| NEW MEXICO | CNM | CARLSBAD CAVERN CITY AIR TERMINAL |
| TEXAS | CNW | TSTC WACO |
| UTAH | CNY | MOAB CANYONLANDS FLD |