What should be done to monitor after attempting to reach the captain via interphone if unsuccessful?

Monitoring the clear zone after unsuccessful attempts to reach the captain via interphone is essential for several reasons. The clear zone refers to the area around the cockpit that should remain unobstructed and free from any potential hazards. Following standard operating procedures, if the interphone communication cannot establish contact with the captain, it is critical to maintain situational awareness of the environment near the cockpit.

By monitoring the clear zone, cabin crew can ensure that the area remains secure and that no unauthorized persons gain access to the cockpit. Additionally, it could involve observing any unusual behavior or situations among the passengers. This proactive measure supports the overall safety and security of the flight, ensuring that any potential issues are addressed promptly and effectively.

Other actions, such as notifying security or checking on passengers, can also be important but do not directly address the immediate needs for flight security and cockpit safety that monitoring the clear zone entails. Adjusting cabin lights for visibility is more about passenger comfort and aesthetics, rather than focusing on the security protocols required in this specific scenario.