| Keyword | Most frequent expressions (number of websites) |
|---|---|
| ifr | ifr automotive (1), óra ifr (1), ifr közeledve (1), rule ifr (1), ifr additional (1), hr ifr (1), sep ifr (1), ifr course (1), able ifr (1), ifr condition (1), vfr ifr (1), ifr pilot (1), aerodrome ifr (1) |