Aeronautical Terms beginning with I
IAP
Instrument Approach Procedure
IATA
International Air Transport Association
ICAO
International Civil Aviation Organization
IFR
Instrument Flight Rules
IMC
Instrument Meteorological Conditions
in
inch
inHg
inches of mercury
IR
Infrared
ITCZ
Intertropical Convergence Zone
ITWS
Integrated Terminal Weather System
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