I
- ICAO standards and recommended practices
- ice guard
- ice pellet
- ice storm
- icing
- icing conditions
- IDENT feature
- identification beacon
- identification plate
- idle
- IFR flight
- igloo
- ILS glide path angle
- immigration control
- import duties and taxes
- improperly documented person
- in-flight emergency
- in-flight entertainment
- in-flight low-pitch position
- in-flight medical emergency
- in-flight shutdown
- in ground effect
- inbound leg
- incident
- inclinometer
- incompatible
- independent parallel approaches
- independent parallel departures
- india
- induction system
- inertial measurement unit
- inertial navigation system
- infected area
- initial approach
- initial approach fix
- initial approach segment
- inner approach surface
- inner horizontal surface
- inner marker
- inner transitional surface
- instructions for continuing airworthiness
- instructor
- instrument approach procedure
- instrument flight procedure
- instrument flight rules
- instrument flight time
- instrument ground time
- instrument landing system
- instrument meteorological conditions
- instrument runway
- instrument shelter
- instrument time
- integrity of aeronautical data
- intermediate approach segment
- intermediate holding position
- international aeronautical and maritime search and rescue manual
- international air transport association
- international air transportation
- international airport
- International Civil Aviation Organization
- international NOTAM office
- international operating agency
- internetworking protocol
- intersection
- intertropical convergence zone
- inversion
- inverted engine
- inverted loop
- inverted spin
- investigation
- investigator-in-charge
- inward flow turbine
- ionosphere
- ionospheric storm
- isobar
- isogonic lines
- isohyet
- isolated aircraft parking position
- isotherm