| bălgarski ezik | bul-001 |
| vazduhoplavane | |
| bălgarski ezik | bul-001 | aviacia |
| Deutsch | deu-000 | Luftfahrt |
| English | eng-000 | aviation |
| français | fra-000 | aviation |
| bokmål | nob-000 | luftfart |
| russkij | rus-001 | awiázija |
| español | spa-000 | aeronáutica |
| svenska | swe-000 | flyg |
| svenska | swe-000 | flygtrafik |