According to RCLS, what color lights are found in the last 1,000 feet of the runway?

In the last 1,000 feet of the runway, red lights are utilized to indicate the end of the usable runway. This is part of the Runway Condition Light System (RCLS) guidance, which helps pilots discern their position relative to the runway during landing, particularly in low visibility conditions.

Red lights signal to pilots that they are nearing the end of the runway, which is crucial for making safe landing decisions. When pilots see red lights, they understand that they should be prepared for a potential go-around if they are not at a safe landing speed and configuration.

The other colors mentioned have different meanings; for example, white lights are typically used along the length of the runway for the approach path, while alternating white and red lights mark the transition zone where the runway might be deteriorating in conditions, and green lights are often used to indicate the beginning of the runway. Understanding these light systems is essential for safe aircraft operations during landing and taxiing.