Is it safe to approach the aircraft when the Anti-collision lights are on?

The correct answer highlights a critical safety protocol in aviation. When the anti-collision lights are on, it indicates that the aircraft is either in movement or preparing to start its engines. These lights are intended to alert personnel and ground crew of the aircraft's operational status, signaling that it could pose a danger to anyone approaching. Therefore, approaching an aircraft with the anti-collision lights activated is unsafe due to the potential risk of being in the vicinity of moving parts, engine thrust, or the aircraft itself starting its engines.

This safety measure helps ensure that ramp agents and other crew members maintain a safe distance from aircraft that may be in operation, thus preventing accidents and injuries on the ramp. Recognizing this signal is vital for maintaining a safe working environment in the busy areas around airports where aircraft are frequently being moved and serviced.