What is the last check that No1 must do at 10 minutes to landing?

In the context of cabin crew duties, the last check that the No1 (lead cabin crew member) must perform at 10 minutes to landing is typically to make a public address (PA) announcement. This announcement serves several important purposes. It informs passengers about the upcoming landing, provides instructions for their safety, and reassures them about the landing procedure.

Ensuring passengers are aware of the need to prepare for landing is a critical safety step. This includes reiterating the importance of securing personal items, fastening seatbelts, and being aware of the emergency exits. Making this announcement at the ten-minute mark acts as an essential reminder and contributes to a well-organized and smooth landing process.

The other options, while important in their own right, are not typically the primary focus of the No1 at this specific time. Checking seatbelts, conducting a headcount, and turning off the lights would usually be performed in the lead-up to this point, but the PA announcement is key for clear communication to passengers right before landing.