When should non-ambulatory customers evacuate?

The correct choice indicates that non-ambulatory customers should evacuate after the main flow of traffic. This approach recognizes the need to prioritize the evacuation of ambulatory customers first to facilitate a more organized and efficient exit from the aircraft. By allowing the main flow of ambulatory passengers to proceed, it helps avoid congestion and ensures that emergency exits can be cleared more effectively, which is crucial in an emergency situation.

Non-ambulatory customers may require additional assistance, and it is essential that those who can evacuate independently do so first to create a smoother pathway for medically dependent individuals who may need help. This protocol also adheres to safety procedures by mitigating the risk of injury or delay during an evacuation.

In contrast, evacuating non-ambulatory customers immediately or before ambulatory ones could lead to potential chaos and safety hazards, as helpers and emergency responders would be navigating around additional obstacles. Thus, the structured approach maintains order and maximizes safety during an emergency evacuation.