How far do touchdown zone lights extend from the threshold?

Touchdown zone lights extend 3,000 feet from the threshold of the runway. This is significant for pilots as these lights are designed to enhance visibility and aid in alignment during the landing phase of flight, especially in low visibility conditions. The 3,000-foot extension provides pilots with a clear visual reference for descent and landing, helping to ensure a safer approach.

Other distances are incorrect because they do not conform to the standards set for touchdown zone lighting. For instance, distances such as 1,500 feet or 2,500 feet do not provide adequate visual guidance when landing on longer runways, while 4,000 feet exceeds the typical specifications and operational requirements for such lighting systems. Understanding the correct distance helps in aviation safety by ensuring compliance with regulatory guidelines and enhancing pilot situational awareness during critical landing phases.