Aerospace Acronyms: I
| Acronym | Definition |
|---|---|
| IAS | Indicated Air Speed. |
| IATA | International Air Transport Association. |
| I/C | Intercom. |
| ICAO | International Civil Aviation Organisation. |
| IF | Instrument Flying. |
| IFF | Identification Friend or Foe. |
| IFR | Instrument Flight Rules. |
| IGE | In Ground Effect. |
| IGS | Instrument Guidance System. |
| ILS | Instrument Landing System. |
| IMC | Instrument Meteorological Conditions. |
| INCERFA | Uncertainty Phase of Search-And-Rescue Procedure. |
| INS | Inertial Navigation System. |
| IRS | Inertial Reference System. |
| INTER | Intermittent or fluctuating. |
| IR | Instrument Rating. |
| ISA | International Standard Atmosphere. |
| ITT | Inter-Turbine Temperature. |
