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Welcome to the Dauntless Aviation Glossary!
At Dauntless, our editorial staff maintains the web's largest unified glossary of aviation terms. This glossary is built from a combination of official, quasi-official,
and proprietary sources (including original material that we develop oursselves). Uniquely, we often provide multiple definitions of a given term so that you can find that which best applies
to you. In order to maximize your learning efficiency, this glossary (and similar ones for our international users) is incresingly fully integrated into our aviation learning apps, including
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Ils
| Ils | | | A ground-based precision instrument approach system usually consisting of a localizer, glideslope, outer marker, middle marker, and approach lights. | | source: FAA Advanced Avionics Handbook (FAA-H-8083-6) |
| | | Instrument Landing System. A radar-based system allowing ILS-equipped aircraft to find a runway and land when clouds may be as low as 200' (or lower for special circumstances). | | source: FAA Aerosense Glossary |
| | | A precision instrument approach system that normally consists of the following electronic components and visual aids: localizer, glide slope, outer marker, middle marker, and approach lights. | | source: FAA Instrument Procedures Handbook (FAA-H-8083-16) |
| | A precision instrument approach system which normally consists of the following electronic components and visual aids: - Localizer. (See LOCALIZER.)
- Glideslope. (See GLIDESLOPE.)
- Outer Marker. (See OUTER MARKER.)
- Middle Marker. (See MIDDLE MARKER.)
- Approach Lights. (See AIRPORT LIGHTING.)
(Refer to 14 CFR Part 91.) (Refer to AIM.) | | source: FAA Pilot/Controller Glossary |
| | | Instrument Landing System (ILS): An electronic system that provides both horizontal and vertical guidance to a specific runway, used to execute a precision instrument approach procedure. | | source: FAA Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25A) |
| | | Instrument landing system (ILS): An electronic system that provides both horizontal and vertical guidance to a specific runway, used to execute a precision instrument approach procedure. | | source: FAA Risk Management Handbook (FAA-H-8083-2) |
| | | Instrument landing system (ILS): An electronic system that provides both horizontal and vertical guidance to a specific runway, used to execute a precision instrument approach procedure. Instrument meteorological conditions (IMC). | | source: FAA Weight Shift Control Handbook (FAA-H-8083-5) |
| | | Instrument Landing System: a system which uses radio transmitter signals to guide an aircraft down, typically when visibility is poor. ILS consists of the glideslope (G/S), localizer (LLZ) and Locator (LOC) | | source: ICAO English Pro Aviation Glossary |
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Disclaimer: While this glossary in most cases is likely to be highly accurate and useful, sometimes, for any number of editorial, transcription, technical, and other reasons, it might not be.
Additionally, as somtimes you may have found yourself brought to this page through an automated term matching system, you may find definitions here that do not match the cotext or application in which
you saw the original term. Please use your good judgement when using this resource.
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