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Thu, Apr 07, 2011

ANN's Daily Aero-Term (04.07.11): Visual Approach Slope Indicator

Aero-Terms!

Aero-Terms are designed to be a daily reminder of the terms, names, acronyms and explanations of the unique language that populates the aviation world. Aerospace, sport aviation, fixed wing, helo, you name it... it's all fair game.

Aero-Terms should serve as a quick but intriguing reminder of the terms you may use every day, or an introduction to an aspects of the Aero-World you may not yet be familiar with. ANN also encourages readers to go beyond the FMI link, and further research any intriguing terms.

Suggestions for future Aero-Terms are ALWAYS welcome, as are additions or discussion of the explanations given for each Aero-Term.

Visual Approach Slope Indicator

The Visual Approach Slope Indicator (VASI) is a system of lights on the side of an airport runway that provides visual descent guidance information during the approach to a runway. These lights may be visible from up to five miles during the day and up to 20 miles or more at night. There are several types of VASI currently in use.

FMI: http://pilotportalusa.atspace.com/aviation_dictionary_a3.html

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