

Aviation Terms
| Title | Description |
| I | India |
| IATA | International Air Transport Association |
| IATA Code | These location indicators are codes consisting of exactly three letters. These codes are used by airlines for reservations, ticketing and baggage checking. They are (usually) easily interpreted. |
| IBAA | Italian Business Aviation Association |
| IBAC | International Business Aviation Council |
| ICAO | International Civil Aviation Organization |
| ICAO Code | Location indicator is a four-letter alphanumeric code designating each airport around the world. These codes are defined by the International Civil Aviation Organization. They are typically used in private travel. |
| IFR | Instrument Flight Rules. A regulatory term describing a flight which may be conducted in conditions where the pilot cannot see outside the aircraft (e.g. in cloud and fog) and must fly only by his instruments. Compare to Visual Flight Rules. Also not to be confused with the navigational technique often used by novice pilots called "I Follow Railroads." |
| ILS | Instrument Landing System. Under low visibility conditions, this system allows an aircraft to land by following instruments that show "up/down" and "left/right" directions to the runway. |
| Indicated Air Speed | IAS. The airspeed read directly from the airspeed indicator on an aircraft. The IAS is an important value for the pilot because it directly indicates stall speed and various airframe structurally limited speeds, regardless of density altitude. Furthermore the IAS is specified in regard to airspeed restrictions below certain altitudes since it is the primary speed indicator in an aircraft when operated below transonic or supersonic speeds. |
| Indicated Altitude | The reading on the altimeter when the altimeter is set to the local barometric pressure at Mean Sea Level. |
| Instrument Flight Rules | IFR. A regulatory term describing a flight which may be conducted in conditions where the pilot cannot see outside the aircraft (e.g. in cloud and fog) and must fly only by his instruments. Compare to Visual Flight Rules. |
| Instrument Meteorological Conditions | Conditions such as visibility, distance between clouds, ceiling level that are below the specified standard minimums for visual meteorological conditions. |
| Insurance | Many jet charter operators carry a minimum of $50,000,000 insurance combined single limit, bodily injury to passengers property damage liability. |
| Interim Lift | The use of aircraft by individuals or corporations who find themselves in any of the following situations: awaiting for delivery of a new aircraft, aircraft undergoing scheduled or unscheduled maintenance, requiring additional lift while evaluating purchase of another aircraft, ongoing low-risk evaluation of an initial aircraft acquisition. Find Interim Lift availble for charter flights on the Empty Legs and Transient Aircraft pages of JetRequest.com. |
| Interior Refurbishment | Renovation of the inside of the aircraft. This typically includes new seats, carpet, upholstery, color schemes, cabinetry, sound proofing, etc. |
| International Flight | Flight that originates in one country and ends in another country. Find aircraft available for your international charter flights on the Empty Legs and Transient Aircraft pages of JetRequest.com. |
| IS-BAO | International Standard for Business Aircraft Operations. IS-BAO was developed by the industry for the benefit of the industry. It is a code of best practices designed to help flight departments worldwide achieve a high level of safety and professionalism. |







