| 1 | Inboard | IB |
|---|
| 2 | instrument approach chart | IAC |
|---|
| 3 | initial approach fix | IAF |
|---|
| 4 | instrument approach procedure | IAP |
|---|
| 5 | indicated airspeed | IAS |
|---|
| 6 | International Air Transport Association | IATA |
|---|
| 7 | Instructions for Continuous Airworthiness | ICA |
|---|
| 8 | International Civil Aviation Organization | ICAO |
|---|
| 9 | International Council of the Aeronautical Sciences | ICAS |
|---|
| 10 | Interface Control Document | ICD |
|---|
| 11 | idle cut-off | ICO |
|---|
| 12 | Ice Contaminated Tailplane Stall | ICTS |
|---|
| 13 | integrated drive generator | IDG |
|---|
| 14 | identify (XPDR) | IDT |
|---|
| 15 | integrated engine pressure ratio | IEPR |
|---|
| 16 | interactive electronic technical manual | IETM |
|---|
| 17 | intermediate approach fix | IF |
|---|
| 18 | International Federation of Airworthiness | IFA |
|---|
| 19 | International Federation of Air Traffic Controllers' Associations | IFATCA |
|---|
| 20 | In Flight Entertainment | IFE |
|---|
| 21 | instrument flight procedure | IFP |
|---|
| 22 | instrument flight rules | IFR |
|---|
| 23 | in-flight shutdown | IFSD |
|---|
| 24 | Inlet guide vane | IGV |
|---|
| 25 | instrument landing system | ILS |
|---|
| 26 | instrument meteorological conditions | IMC |
|---|
| 27 | Inside Mold Line | IML |
|---|
| 28 | Illustrated Parts Catalog (e.g. by Boeing, Airbus) | IPC |
|---|
| 29 | Initial Release | IR |
|---|
| 30 | inertial reference system | IRS |
|---|
| 31 | instrument rating test | IRT |
|---|
| 32 | instrumented runway visual range | IRVR |
|---|
| 33 | International Standard Atmosphere | ISA |
|---|
| 34 | integrated standby flight display | ISFD |
|---|
| 35 | integrated standby instrument system | ISIS |
|---|
| 36 | International Traffic in Arms Regulations | ITAR |
|---|
| 37 | interstage turbine temperature | ITT |
|---|
