| |||
| overgangsniveau n | |||
| English thesaurus | |||
| |||
| The lowest flight level available for use above the transition altitude | |||
|
transition level : 4 phrases in 1 subject |
| Transport | 4 |
| |||
| overgangsniveau n | |||
| English thesaurus | |||
| |||
| The lowest flight level available for use above the transition altitude | |||
|
transition level : 4 phrases in 1 subject |
| Transport | 4 |