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Glossary
| IAS | Indicated Air Speed |
| IAW | In Accordance With |
| IC | Incident Commander |
| ICAS | International Council of Airshows |
| IFR | Instrument Flight Rules |
| IHRA | International Hot Rod Association |
| IIC | Inspector in Charge |
| Ingress/Egress Routes | Those routes used by air show performers to enter and exit the flying display area. |
| Inspector-In-Charge (IIC) | The FAA aviation safety inspector (ASI) who has primary FAA responsibility for the aviation event. |