ICAO Aircraft Codes Abbreviations and Acronyms
- ISIsland Airlines
- ISAIsland Airlines
- ISAFInternational Security Assistance Force
- ISAFInternational Stabilisation Assistance Force
- ISAFIsraeli Air Force
- ISDIsd Avia
- ISFInternational Stabilisation Assistance Force
- ISIIsland Air
- ISLLandsflug
- ISLA GRANDEIsle Grande Flying School
- ISLAND BIRDTake Air Line
- ISLAND EXPRESSDolphin Express Airlines
- ISLAND FLIGHTIsland Air Charters
- ISLAND TIGERGb Airlink
- ISLANDAIRFour Island Air
- ISLANDMEXIsland Air
- ISLE AVIAIsland Aviation and Travel
- ISMAuo Airclub AIST-M
- ISNInterisland Airlines
- ITAInter-Air
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