What is the first step in a planned emergency evacuation?

In a planned emergency evacuation, the first step is to ensure that all safety measures are in place before initiating the process of evacuating passengers. The correct answer emphasizes the need to open seatbelts and harnesses, as this allows for the immediate movement of passengers towards exits once the evacuation begins. Turning the emergency lights ON enhances visibility, guiding passengers towards exits even in low light conditions.

This step is crucial because it prepares passengers for quick movement, which can significantly reduce the time taken to divert them to safety. By addressing the need for restraints to be released and ensuring that emergency lighting mechanisms are activated, flight attendants create an environment that is conducive to an efficient evacuation process. Ensuring passenger readiness and visibility ahead of physical movement is vital for maintaining order and safety in an emergency situation.