What color are the touchdown zone lights and how far do they extend down the runway?

Touchdown zone lights are critical for guiding pilots during the landing phase of an aircraft's approach. The correct answer indicates that these lights are steady white and extend 3,000 feet from the runway threshold. This configuration is designed to provide crucial visual references for pilots, enhancing their ability to gauge both their altitude and distance from the runway during landing.

The use of steady white lights specifically helps in creating a clear and consistent visual cue, reducing the likelihood of misjudgment during approach. The 3,000-foot extension is significant because it allows pilots to remain oriented and focused on their landing trajectory well before reaching the runway itself, which is essential for a safe landing.

Other options do not correctly represent the standard specifications of touchdown zone lights. For instance, flashing red lights may indicate runway conditions or approach issues rather than marking touchdown zones, while steady green lights often pertain to runway status. Solid yellow lights do not match the standard color used for touchdown lights, which further confirms the importance of understanding the correct color scheme and distances involved in aviation operations.