| Abbreviation | Definition |
|---|---|
| IPC | Intermediate Pressure Compressor |
| IRAL | Indo Russian Aviation Ltd |
| IRC | Intgrated Communication Resource |
| IRKS | Indian River Kontrol Society |
| IRU | Intertial Reference Unit |
| ISAP | International Society for Aviation Photography |
| ISAP | International Society of Aviation Photographers |
| ISAP | International Symposium on Aviation Psychology |
| ISAR | Inverse Synthetic Aperture Radar |
| ISAT | Integrated Shipping Assembly Tooling |
| ISAT | Integrated Shipping & Assembly Tooling |
| IS-BAO | International Business Aviation Council |
| ISDU | Inertial System Display Unit |
| ISF | Instrument Safety Factor |
| ISFD | Integrated Standby Flight Display |
| ISR | Integrated Surveillance Resourse |
| ISS | Integrated Surveillance System |
| ISSPU | Integrated Surveillance System Processor Unit |
| ITAC | Intertial Thrust Asymmetry Compensation |
| ITAKA | Initiative Towards sustAinable Kerosene for Aviation |