Which ILS component provides distance information?

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Multiple Choice

Which ILS component provides distance information?

Explanation:
Marker beacons provide distance information along the ILS approach. They are located along the final approach path and emit distinct signals that give you time and position cues as you descend. The outer marker marks a point roughly 4–7 miles from the runway, the middle marker about 3,000–4,000 feet out, and the inner marker very close to the threshold. The blue, amber, and white lights (with corresponding audible cues) help pilots gauge how far away they are from the runway, making distance awareness part of the ILS approach. While DME can supply numerical distance, and the localizer and glideslope provide lateral and vertical guidance respectively, marker beacons specifically convey distance information within the ILS system.

Marker beacons provide distance information along the ILS approach. They are located along the final approach path and emit distinct signals that give you time and position cues as you descend. The outer marker marks a point roughly 4–7 miles from the runway, the middle marker about 3,000–4,000 feet out, and the inner marker very close to the threshold. The blue, amber, and white lights (with corresponding audible cues) help pilots gauge how far away they are from the runway, making distance awareness part of the ILS approach. While DME can supply numerical distance, and the localizer and glideslope provide lateral and vertical guidance respectively, marker beacons specifically convey distance information within the ILS system.

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