| Abbreviation | Definition |
|---|---|
| MCW | Mason City, Iowa USA |
| MCX | Makhachkala, Russia |
| MCY | Sunshine Coast, Queensland, Australia |
| MCZ | Zumbi dos Palmares International Airport, Maceio, Alagoas, Brazil |
| MD51 | Kent & Queen Anne's Hospital Heliport, Chestertown, Maryland USA |
| MD52 | McCready Memorial Hospital Heliport, Crisfield, Maryland USA |
| MDAB | Samana Arroyo Barril, Dominican R. |
| MDAD | Azua ABC Dominica, Dominican R. |
| MDAN | Cotui-Angelina, Dominican R. |
| MDB | Melinda, Belize |
| MDBA | Consuelo-Batey Anita, Dominican R. |
| MDBC | La Romana-Batey Cacata, Dominican R. |
| MDBE | La Romana-Batey Lechuga, Dominican R. |
| MDBG | Higuey-Baigua, Dominican R. |
| MDBH | Barahona, Dominican R. |
| MDBL | Boca Chica-Batey Luisa, Dominican R. |
| MDBM | San Pedro de Macoris Batey las, Dominican R. |
| MDC | Manado, Indonesia |
| MDCO | Consuelo, Dominican R. |
| MDCR | Cabo Rojo, Dominican R. |