| |||
instrument flight rules | |||
IFR (User) | |||
instrument flight rules (IFR) | |||
| |||
instrument flight rules | |||
IFR (Instrument Flight Rules); instrument flight rules (IFR) |
правила полёта по приборам : 21 phrases in 5 subjects |
Astronautics | 2 |
Aviation | 12 |
Meteorology | 1 |
Military | 5 |
Technology | 1 |