| ALASKA | SMK | ST MICHAEL |
| ALASKA | SMU | SHEEP MOUNTAIN |
| CALIFORNIA | SMF | SACRAMENTO INTL |
| CALIFORNIA | SMO | SANTA MONICA MUNI |
| CALIFORNIA | SMX | SANTA MARIA PUB-CAPT G ALLAN HANCOCK FLD |
| IDAHO | SMN | SALMON LEMHI CO |
| INDIANA | SMD | FORT WAYNE SMITH FLD |
| KENTUCKY | SME | SOMERSET-PULASKI CO-J.T. WILSON FLD |
| NEW JERSEY | SMQ | SOMERVILLE SOMERSET |
| SOUTH CAROLINA | SMS | SUMTER |