F | Fixed |
FAC | Facilities |
FAF | Final approach fix |
FAL | Facilitation of international air transport |
FAP | Final approach point |
FATO | Final approach and take−off area |
FAX | Facsimile transmission |
FBL | Light (used to indicate the intensity of weather phenomena, interference or static reports, e.g. FBL RA = light rain). |
FC | Funnel cloud (tornado or water spout) |
FCST | Forecast |
FCT | Friction coefficient |
FDP | Flight data processing |
FEB | February |
FG | Fog |
FIC | Flight information centre |
FIR | Flight information region |
FIS | Flight information service |
FISA | Automated flight information service |
FL | Flight level |
FLD | Field |
FLG | Flashing |
FLR | Flares |
FLT | Flight |
FLTCK | Flight check |
FLUC | Fluctuating or fluctuation or fluctuated |
FLW | Follow(s) or following |
FLY | Fly or flying |
FM | From |
FM... | From (followed by time weather change is forecast to begin) |
FMS | Flight management system |
FMU | Flow Management Unit |
FNA | Final approach |
FPL | Filed flight plan (message type designator) |
FPM | Feet per minute |
FPR | Flight plan route |
FR | Fuel remaining |
FR | French language |
FREQ | Frequency |
FRI | Friday |
FRNG | Firing |
FRONT | Front (relating to weather) |
FRQ | Frequent |
FSL | Full stop landing |
FSS | Flight service station |
FST | First |
FT | Feet (dimensional unit) |
FU | Smoke |
FUA | Flexibile use of airspace |
FZ | Freezing |
FZDZ | Freezing drizzle |
FZFG | Freezing fog |
FZRA | Freezing rain |