What is the purpose of Approach Lights?

• A. Provide visual guidance during landing operations at night and under low visibility conditions
• B. Outline the lateral and longitudinal limits of the usable runway surface
• C. Indicate your location on the airfield
• D. Denote an entrance to a runway or critical area

Answer: (A)

Approach lights provide visual guidance during landing operations at night and in low visibility conditions. They start at the threshold and extend outward along the approach path, often in a pattern of light bars and sequenced flashing lights. This setup helps you acquire the runway environment, stay aligned with the centerline, and judge distance to the threshold as you descend. They support a smooth approach and enable a proper flare when you reach the decision point. They aren’t used to define usable runway limits, indicate your location on the airfield, or mark an entrance to a runway or critical area.