At what cabin altitude will oxygen masks automatically drop down?

Oxygen masks automatically drop down in the aircraft cabin when the cabin altitude reaches 14,000 feet. This altitude is significant because it corresponds to a level where the atmospheric pressure has decreased enough that the concentration of oxygen available in the air is insufficient for normal breathing. At or above this altitude, passengers and crew may experience symptoms of hypoxia, which is a condition that arises when the body is deprived of adequate oxygen.

When the cabin altitude reaches this threshold, oxygen masks are deployed to ensure that everyone on board has access to supplemental oxygen, thereby ensuring their safety and well-being until the aircraft can descend to a lower altitude where breathing is safe again. This automatic deployment is a crucial safety feature that aids in managing in-flight emergencies, such as cabin depressurization. Understanding this altitude is vital for flight crew training and passenger safety protocols.