What should be done if a fire occurs during boarding?

When a fire occurs during boarding, the primary and immediate action should be to inform the captain by pressing the interphone. This step is crucial because the captain needs to be made aware of any emergencies in order to assess the situation accurately and make informed decisions regarding passenger safety and the appropriate response measures to take.

The captain plays a vital role in coordinating an effective response, whether that involves evacuation procedures or managing the situation while ensuring the safety of everyone on board. Prompt communication is essential to implement a well-organized emergency response.

In the context of handling a fire during boarding, it is important to follow the established protocols, as rushing to evacuate all passengers or using fire extinguishers inappropriately could lead to panic and confusion, further jeopardizing safety. Closing the aircraft doors may also introduce unnecessary risks, as passengers might need a clear exit in case of an evacuation. Hence, informing the captain provides a structured approach to addressing the emergency.