What should the No3 do upon hearing "Cabin Crew Standby"?

When "Cabin Crew Standby" is announced, it is a signal for cabin crew members to prepare for potential emergency procedures or to be ready for further instructions from the flight deck. The responsibility of the No3 is to ensure that they are in their assigned position to assist in any situation that may arise.

By stopping their current activities, stowing the trolley, and moving promptly to their designated door, the No3 is ensuring they are prepared to respond quickly and effectively should an emergency develop. This action is critical in maintaining safety protocols and ensuring that all crew members are aligned and ready to act as a cohesive unit.

The emphasis here is on readiness and safety, which is paramount in the cabin environment during flight. This proactive approach allows for a well-coordinated response in any urgent situations that may occur.