If an airplane is hijacked or there is a bomb threat, what is the first action to take?

In the event of a hijacking or bomb threat, the primary focus should be on ensuring the safety of everyone involved. The correct first action is to contact the IOC, which stands for the Inflight Operations Center. This is crucial because the IOC is specifically equipped and trained to handle such emergencies. They will have access to resources and protocols necessary for responding to the situation, including coordinating with law enforcement and ensuring that the proper measures are taken to secure the aircraft and passengers.

The IOC serves as a central communication hub during emergencies, providing guidance and assistance to the flight crew. By promptly reporting the situation to them, you ensure that a coordinated response is initiated, and that the necessary protocols are followed to address the threat effectively.

While informing the captain is indeed important, the captain would typically rely on the IOC to provide the broader emergency response framework. Similarly, while notifying airport security and evacuating passengers are critical components of managing a hijacking or bomb threat, these actions should follow after the IOC has been alerted to facilitate a proper and systematic response.