From 3000 feet remaining to 1000 feet remaining, runway centerlights are which pattern?

From 3000 feet remaining to 1000 feet remaining, runway centerlights are which pattern?

• A. White
• B. Alternating red/white
• C. Red
• D. Off

Answer: (B)

Runway centerline lighting uses color changes to give distance cues as you approach. In the stretch from 3,000 feet remaining down to 1,000 feet remaining, the centerline lights switch to an alternating red and white pattern. This tells you you’re in the final approach segment and still have some distance to the runway to manage. Within 1,000 feet remaining, the pattern changes to red only, signaling you are very close to landing. The alternating red/white pattern is the specific cue for that 3,000–1,000 foot range.

Runway centerline lighting uses color changes to give distance cues as you approach. In the stretch from 3,000 feet remaining down to 1,000 feet remaining, the centerline lights switch to an alternating red and white pattern. This tells you you’re in the final approach segment and still have some distance to the runway to manage. Within 1,000 feet remaining, the pattern changes to red only, signaling you are very close to landing. The alternating red/white pattern is the specific cue for that 3,000–1,000 foot range.