| ALASKA | PIZ | POINT LAY LRRS |
| FLORIDA | PIE | ST PETERSBURG-CLEARWATER INTL |
| GEORGIA | PIM | PINE MOUNTAIN HARRIS CO |
| IDAHO | PIH | POCATELLO RGNL |
| ILLINOIS | PIA | GREATER PEORIA RGNL |
| MISSISSIPPI | PIB | HATTIESBURG-LAUREL RGNL |
| PENNSYLVANIA | PIT | PITTSBURGH INTL |
| SOUTH DAKOTA | PIR | PIERRE RGNL |
| TEXAS | PIL | PORT ISABEL-CAMERON CO |