I
- ICAO standards and recommended practices
- ice accretion
- ice guard
- ice light
- ice pellet
- ice pellets
- ice storm
- icing
- icing conditions
- ident
- IDENT feature
- identification beacon
- identification plate
- idle
- idling
- IFR flight
- igloo
- ILS glide path angle
- impeller
- in-flight emergency
- in-flight entertainment
- in-flight hypoxia
- in-flight low-pitch position
- in-flight medical emergency
- in-flight refuelling
- in-flight shutdown
- in the vicinity
- inbound leg
- inbound turn
- INCERFA
- incident
- independent parallel approaches
- independent parallel departures
- india
- indicated airspeed
- indicated altitude
- indicated ILS glide path angle
- indicated mean effective pressure
- induced drag
- induced flow
- induced power loss
- induced torque
- induction flame dumper
- induction system
- industry codes of practice
- inertial measurement unit
- inertial navigation system
- information marking
- information sign
- initial approach
- initial approach fix
- initial approach segment
- initial climbout
- initial slot allocation
- inner approach surface
- inner horizontal surface
- inner marker
- inner transitional surface
- inspection port
- instructions for continuing airworthiness
- instructor
- instrument
- instrument approach
- instrument approach chart
- instrument approach procedure
- instrument board
- instrument flight
- instrument flight procedure
- instrument flight rules
- instrument flight time
- instrument landing system
- instrument meteorological conditions
- instrument navigation
- instrument panel
- instrument runway
- instrument shelter
- integral compressor disk
- integral disk
- integral turbine
- integral wheel
- integrated load limitation
- integrity (aeronautical data)
- integrity of aeronautical data
- intercooler (1)
- intercooler (2)
- intermediate base-struts
- intermediate holding position
- intermediate holding position lights
- intermediate holding position marking
- intermediate longitudinal
- intermediate radial strut
- intermediate rating
- intermediate transverse frame
- intermodal
- internal-combustion starter
- internal balance
- internal combustion engine
- internal compression intake
- internal stress
- internal tiedowns
- international aeronautical and maritime search and rescue manual
- international air transportation
- international airport
- international civil aviation organization
- international index number
- international standard atmosphere
- intersection
- intersection take-off sign
- intertropical convergence zone
- into the wind
- inversion
- inverted spin
- investigator-in-charge
- ionosphere
- isobar
- isogonic lines
- isohyet
- isolated aircraft parking position
- isotherm