| ALASKA | PNP | PILOT POINT |
| FEDERATED STATES OF MICRONESIA | PNI | POHNPEI ISLAND POHNPEI INTL |
| FLORIDA | PNS | PENSACOLA RGNL |
| ILLINOIS | PNT | PONTIAC MUNI |
| MAINE | PNN | RANGELEY PRINCETON MUNI |
| MINNESOTA | PNM | PRIOR LAKE PRINCETON MUNI |
| OKLAHOMA | PNC | PONCA CITY RGNL |
| PENNSYLVANIA | PNE | NORTHEAST PHILADELPHIA |
| PENNSYLVANIA | PN0 | MORRIS ECHO |
| WYOMING | PNA | PINEDALE RALPH WENZ FLD |