Instrument Landing System(ILS)

Definition

A precision approach system providing lateral guidance via the localizer and vertical guidance via the glideslope. ILS enables approaches in very low visibility down to Category III autoland conditions.

Related Terms

Localizer(LOC)

The lateral guidance component of an ILS providing precise runway centerline ali...

Glideslope(GS)

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

Decision Height/Altitude(DH/DA)

The height during a precision approach at which the pilot must decide to land or...

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