Which element is part of threshold lighting used to identify the threshold on instrument approaches?

Which element is part of threshold lighting used to identify the threshold on instrument approaches?

• A. Threshold lights
• B. Wind sock
• C. PAPI lights
• D. Runway centerline lights

Answer: (A)

On instrument approaches, identifying where the runway begins is done with threshold lighting. This system places lights along the threshold line so you can clearly see the start and align your descent to touch down at the correct point, even in low visibility. The other cues serve different purposes: a wind sock shows wind direction, PAPI lights provide glide slope guidance, and runway centerline lights help you stay aligned with the runway once you’re on it. The threshold lights are specifically the feature used to identify the threshold itself.

On instrument approaches, identifying where the runway begins is done with threshold lighting. This system places lights along the threshold line so you can clearly see the start and align your descent to touch down at the correct point, even in low visibility. The other cues serve different purposes: a wind sock shows wind direction, PAPI lights provide glide slope guidance, and runway centerline lights help you stay aligned with the runway once you’re on it. The threshold lights are specifically the feature used to identify the threshold itself.