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6 – i ndex
+ICAO
International Civil Aviation
Organisation
IC
IceCrystals (MET code)
ICE
Icing, Ice
ID
Identifier, identify
+IDENT Identification
IF
IntermediateFix or
IntermediateApproachFix
#IFF
IdentificationFriend/Foe
#IFR
Instrument Flight Rules
#ILS
Instrument LandingSystem
IM
InnerMarker
#IMC
Instrument Meteorological
Conditions
IMG
Immigration
IMPR
Improve, Improving,
Improvement
IMT
Immediate, Immediately
INBD
Inbound
#INC
InCloud
+INCERFA UncertaintyPhase
+INFO
Information
+INOP
Inoperative
#INS
Inertial NavigationSystem
INSTL
Install, Installed, Installation
INSTR
Instrument
INT
Intersection
+INTER
Intermittent, Intermittently
INTL
International
INTRG
Interrogator
INTRP
Interrupt, Interruption,
Interrupted
INTSF
Intensify, Intensifying
INTST
Intensity
+ISA
International Standard
Atmosphere
ISB
Independent Sideband
ISOL
Isolated
IWI
IlluminatedWind Indicator
J
JAN
January
+J-BAR
Jet Barrier
JF
Saturday, Sunday andPH
JO
Monday toFriday except PH
JTST
Jet Stream
JUL
July
JUN
June
K
KG
Kilograms
KHZ
Kilohertz
abbreviations and acronyms
CODE DEFINITION
CODE DEFINITION