What is a required action when establishing crew communication in an emergency descent situation?

Establishing verbal communication is crucial in an emergency descent situation because clear and effective communication among crew members can significantly enhance the safety and efficiency of the response. When an emergency occurs, having open lines of dialogue allows crew members to quickly share information, convey necessary actions, and coordinate efforts effectively. This is vital in ensuring that everyone is on the same page, understands their roles, and can respond to the situation appropriately.

While other actions such as providing physical support, sending a distress signal, and assuming manual flight control are undoubtedly important in various contexts, the immediate need for clear verbal communication helps lay the groundwork for a well-organized response to the emergency. It facilitates a shared understanding of the situation, enabling the crew to act cohesively and minimize confusion in a high-stress environment.