Which instrument provides vertical guidance in an ILS?

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Multiple Choice

Which instrument provides vertical guidance in an ILS?

Explanation:
Glide slope provides vertical guidance in an ILS. It defines the descent path to the runway, typically about a 3-degree angle, and the instrument shows deviation from this path so you know whether you’re above or below the desired descent. The localizer handles horizontal guidance along the runway centerline but doesn’t provide vertical information. Marker beacons give fixed reference points on the approach for situational awareness, not continuous vertical guidance. DME measures distance to the facility, not vertical descent information. So the glide slope is the component that guides you vertically.

Glide slope provides vertical guidance in an ILS. It defines the descent path to the runway, typically about a 3-degree angle, and the instrument shows deviation from this path so you know whether you’re above or below the desired descent. The localizer handles horizontal guidance along the runway centerline but doesn’t provide vertical information. Marker beacons give fixed reference points on the approach for situational awareness, not continuous vertical guidance. DME measures distance to the facility, not vertical descent information. So the glide slope is the component that guides you vertically.

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