Obstruction lights near airports are installed primarily to why?

• A. Mark the location of obstacles for maintenance crews.
• B. Provide general illumination for airport perimeter lighting.
• C. Help air traffic controllers coordinate urgent arrivals.
• D. Warn pilots of obstacles.

Answer: (D)

Obstruction lights near airports are installed to warn pilots of obstacles. These lights make tall structures, towers, and other hazards clearly visible to aircraft, especially during night or in poor visibility, so pilots can avoid them during takeoff, approach, and other flight paths. They’re there to improve pilot situational awareness and safety, not to aid maintenance crews, provide general perimeter lighting, or help ATC coordinate arrivals.