Airport operationsQuestion 192 of 934

A tri-color visual approach slope indicator shows a green light. What does this tell the pilot?

  1. The airplane is above the glidepath
  2. The airplane is below the glidepath
  3. The airplane is on the glidepath
  4. The runway is closed
Show answer

Correct answer: The airplane is on the glidepath

In a tri-color system, red means below the glidepath, green means on, and amber means above.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 14: Airport Operations — Other Glidepath Systems, page 351

Practice airport operations

Questions last reviewed: 18 October 2026