What is the typical duration of oxygen masks in the cabin?

The typical duration of oxygen masks in the cabin is 12 minutes. This time frame is critical because it provides enough oxygen for passengers and crew to perform necessary safety procedures during an emergency situation, such as a rapid decompression of the aircraft.

The 12-minute supply is generally considered adequate to allow time for the aircraft to descend to a safe altitude where supplemental oxygen is no longer necessary. It is also designed to cover the time required for emergency drills, communications, and ensuring that all passengers are using their masks correctly.

The duration is established based on safety protocols and regulations that prioritize the well-being of everyone on board and is tailored to ensure that even if an emergency occurs, there is a reliable oxygen supply long enough to manage the circumstances effectively.