| ALASKA | MTF | FAIRBANKS METRO FLD |
| ALASKA | MTM | METLAKATLA SEAPLANE |
| COLORADO | MTJ | MONTROSE RGNL |
| FLORIDA | MTH | THE FLORIDA KEYS MARATHON |
| ILLINOIS | MTO | MATTOON-CHARLESTON COLES CO MEM |
| MARYLAND | MTN | BALTIMORE MARTIN STATE |
| MICHIGAN | MTC | SELFRIDGE ANGB |
| NEW YORK | MTP | MONTAUK |
| VIRGINIA | MTV | MARTINSVILLE BLUE RIDGE |
| WISCONSIN | MTW | MANITOWOC CO |