landing
FSS Flight service station
Ft Feet (dimensional unit)
FU Smoke
FZ Feezing
FZDZ Freezing drizzle
FZFG Freezing fog
FZRA Freezing rain
G
G Green
G/A Ground-to-air
G/A/G Ground-to-air and air-to-ground
GAF German Air Force
GCA Ground controlled approach system or ground controlled approach
GAFOR General Aviation forecast
GAMET Area forecast for low-level flights
GAT General Aviation Terminal
Ge German
GEN General
GEO Geographic or true
GLD Glider
GND Ground
GNDCK Ground check
GP Glide path
GPS Global Positioning System
GR Hail or soft hail
GRIB Processed meteorological data in the form of grid point values expressed in binary form (aeronautical meteorological code)
GS Ground speed
H
H24 Continuous day and night service
HBN Hazard beacon
HDF High frequency direction finding station
HDG Heading
HEL Helicopter
HF High frequency (3000 to 30000 kHz)
HGT Height or height above
HJ Sunrise to sunset
HLDG Holding
HN Sunset to sunrise
HOL Holiday
HPa Hectopascal
HR Hours
HS Service available during hours of schedule operation
HVY Heavy (used to qualify weather phenomena such as rain, e.g. heavy hail = HVYGR)
HX Not permanently active, no specific working hours
Hz Hertz (cycle per second)
I
IAC Instrument approach chart
IAF Initial approach fix
IAL Instrument approach and landing chart
IAS Indicated air speed
IAWP Intitial approach waypoint
IBN Identification beacon
IC Ice crystals (very small ice crystals in suspension, also known as diamond dust)
ICAO International Civil Aviation Organisation
ICE Icing
ID Identifier or identification or identify
Ident Identification
IF Intermediate approach fix
IFF Identification friend/foe
IFPS Integrated Initial Flight Plan Processing System
IFPZ Integrated Initial Flight Plan Processing Zone
IFR Instrument flight rules
IGA International general aviation
ILS Instrument landing system
IM Inner marker
IMC Instrument meteorological condition
IMPR Improve or improved
IMT Immediate or immediately
INA Initial approach
INBD Inbound
INCERFA Uncertainty phase
INFOBRIEF Information
INOP Inoperative
INS Inch(es) (dimensional unit)
INT Intersection
INTL International
INTST Intensity
IR Ice on runway
IWP Intermediate approach waypoint
J
JAN January
JUL July
JUN June
K
Kg Kilogramme(s)
KHz Kilohertz
Km Kilometre(s)
KmH Kilometre(s) per hour
kt Knot(s)
kW Kilowatts
L
L Left (runway identification)
L Locator (see LM, OM)
l Litre(s)
LAT Latitude
lb Pound(s) (weight)
LBA Federal Office of Civil Aviation in Germany
LDA
