in-s - insp
- in-service aircraft
- in-service environment
- in-service testing
- in-the-clear
- in-wing mounted engine
- inadvertent change
- inadvertent deviation
- inadvertent gear retraction
- inadvisable to restore
- inaugural fare
- inaugural flight
- inbalance
- inboard
- inboard aileron
- inboard flap
- inboard rib
- inboard slat
- inboard spoiler
- inbound
- inbound aircraft
- inbound clearance
- inbound course
- inbound documentation
- inbound procedure
- inbound route
- inbound routing
- inbound stopover
- inbound track
- inbound traffic
- inbound turn
- incentive fare
- incentive group travel
- incidence
- incident
- incident data report
- incident investigation
- incidental service
- inclination
- inclusive (tour) fare
- inclusive (tour) fare
