Operations

Visual Approach Slope Indicator(VASI)

Definition

A system of lights beside the runway indicating approach angle. Two-bar VASI shows red over white for on glidepath. Red over red means too low. White over white means too high.

Related Terms

Precision Approach Path Indicator(PAPI)

A visual aid of four light units beside the runway showing the aircraft position...

Glideslope(GS)

The vertical guidance component of an ILS providing a descent path typically set...

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