| Abbreviation | Definition |
|---|---|
| MRAT | Altamira de San Carlos, Costa Rica |
| MRB | Eastern West Virginia Regional Airport / Shepherd Field, Martinsburg, West Virginia USA |
| MRBA | Buenos Aires, Costa Rica |
| MRBB | Babilonia, Costa Rica |
| MRBC | Barra del Colorado, Costa Rica |
| MRBM | Bremen, Costa Rica |
| MRBN | Bataan, Costa Rica |
| MRBO | Boca Naranjo, Costa Rica |
| MRBP | Barra de Parismina, Costa Rica |
| MRBT | Barra de Tortuguero, Costa Rica |
| MRCA | Canas, Costa Rica |
| MRCC | Coto 47, Costa Rica |
| MRCD | Caledonia, Costa Rica |
| MRCE | Carate, Costa Rica |
| MRCH | Chacarita, Costa Rica |
| MRCI | Circuelas, Costa Rica |
| MRCR | Carrillo, Costa Rica |
| MRCV | Cabo Velas, Costa Rica |
| MRCZ | Carrizal, Costa Rica |
| MRD | Merida, Venezuela |