What should the NO1 do after passenger disembarkation?

After passenger disembarkation, the important procedure involves ensuring that the cabin is secure and that no items are left behind. The correct choice emphasizes a comprehensive approach to security checks by combining visual inspections of the overhead bins and conducting security checks systematically from the back to the front of the cabin.

Visually checking all hatbins from the first to the tenth row is essential to ensure that nothing has been left behind or concealed in those spaces. This step allows the crew to identify any potential security threats or overlooked personal items.

Additionally, commencing security checks from the last row to the first row helps create a systematic method of ensuring that every row is thoroughly inspected and that all passengers have safely disembarked. Following this order aids in preventing any lapses in security that might occur if checks are performed haphazardly.

Overall, this combination of actions not only reinforces security protocols but also enhances the safety and cleanliness of the aircraft for subsequent flights. It aligns with standard procedures designed to mitigate risks and address potential threats that may arise post-disembarkation.