I - Aviation Glossary
- I SAY AGAIN
- IAS
- IAWP
- ICAO
- ICAO Three−Letter Designator (3LD)
- Icing
- Ident
- Ident Feature
- Identification [ICAO]
- Idle thrust
- IF NO TRANSMISSION RECEIVED FOR (time)
- IF/IAWP
- IFR
- IFR Aircraft
- IFR Conditions
- IFR Departure Procedure
- IFR Flight
- IFR Landing Minimums
- IFR Military Training Routes (IR)
- IFR over-the-top
- IFR Takeoff Minimums and Departure Procedures
- IFSD
- IFWP
- ILS
- ILS Categories
- IM
- IMMEDIATELY
- In-flight shutdown (IFSD)
- INCERFA (Uncertainty Phase) [ICAO]
- Inclinometer
- INCREASE SPEED TO (Speed)
- Increased Separation Required (ISR)
- Indicated airspeed
- Indicated airspeed (IAS)
- Indicated altitude
- Indirect indication
- Induced drag
- Induction icing
- Inertial navigation system (INS)
- Inflight Refueling
- Inflight Weather Advisory
- Information Request (INREQ)
- Initial Approach Fix (IAF)
- Initial Approach Segment
- Initial Approach Segment [ICAO]
- Inland Navigation Facility
- Inner Marker
- Inner Marker Beacon
- Inoperative components
- Instantaneous vertical speed indicator (IVSI)
- Instrument
- Instrument Approach
- Instrument Approach Operations [ICAO]
- Instrument Approach Procedure (IAP)
- Instrument Approach Procedure [ICAO]
- Instrument Approach Procedure Charts
- Instrument Departure Procedure (DP)
- Instrument Departure Procedure (DP) Charts
- Instrument Flight Rules (IFR)
- Instrument Flight Rules [ICAO]
- Instrument Landing System (ILS)
- Instrument meteorological conditions (IMC)
- Instrument Runway
- Instrument Runway [ICAO]
- Instrument takeoff
- INT
- Integrity
- Intercooler
- Interference drag
- Intermediate Approach Segment
- Intermediate Approach Segment [ICAO]
- Intermediate Fix
- Intermediate Fix/Initial Approach Waypoint
- Intermediate Landing
- International Airport
- International Airport [ICAO]
- International Civil Aviation Organization (ICAO)
- International Civil Aviation Organization [ICAO]
- International standard atmosphere (IAS)
- Interpolation
- Interrogator
- Intersecting Runways
- Intersection
- Intersection Departure
- Intersection Takeoff
- Interstate air commerce
- Interstate air transportation
- Intrastate air transportation
- Inversion
- Inversion illusion
- Inverter. A solid-state electronic device that converts D.C
- Irregular Surface
- Isobars
- Isogonic lines