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What is Instrument Landing System?

Instrument Landing System Precision approach aid providing lateral (localizer) and vertical (glide slope) guidance to a runway.

Source: ICAO Doc 9432, FAA PCG

How is “Instrument Landing System” Used in Practice?

Tower, British 794, established on the ILS runway 27, glide slope captured, requesting landing clearance.

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

instrument landing systemGlide SlopeLocalizerMarker Beacon

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Frequently Asked Questions

What is Instrument Landing System?

Precision approach aid providing lateral (localizer) and vertical (glide slope) guidance to a runway.

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