What immediate action should be taken when a passenger requires oxygen during landing?

When a passenger requires oxygen during landing, the most appropriate immediate action is to contact the flight deck. This is crucial because the flight crew needs to be informed of the situation to ensure that all necessary protocols are followed and to coordinate any necessary assistance upon landing. Prompt communication with the flight deck allows them to prepare for any medical emergencies and ensures that the cabin crew is equipped to handle the situation safely and effectively.

Immediate communication is vital in aviation, particularly during critical phases such as landing, where coordination and safety are paramount. It also allows the flight crew to assess the situation and possibly adjust landing procedures if needed, ensuring that the passenger receives the necessary care without delaying or complicating the landing process.

In contrast, removing the mask quickly, leaving the passenger unattended, or ignoring the situation could lead to serious consequences, not just for the affected passenger but for the overall safety of the flight. Addressing medical needs properly is essential for the well-being of all involved.