Upon discovering a potential explosive device, what is the immediate priority for the crew?

The immediate priority for the crew upon discovering a potential explosive device is to ensure crew safety and maintain communication with one another and relevant authorities. This action is crucial in managing the situation effectively and calmly, as it helps to coordinate efforts among the crew to address the threat while prioritizing their safety as well as that of the passengers. Keeping lines of communication open allows for better situational awareness and helps prepare for any necessary evacuation or mitigation steps.

Securing the device, evacuating the aircraft, or contacting emergency services are important actions that may follow, but they must be conducted after ensuring that everyone is safe and that effective communication is established. By focusing first on safety and communication, the crew can make informed decisions on the next steps to take based on the situation's dynamics.