At what cabin altitude will the electropneumatic actuating valve deploy passenger masks in AUTO?

The deployment of passenger masks in AUTO mode is designed to occur at a cabin altitude of 14,500 feet, with a tolerance of ±500 feet. This altitude is critical for passenger safety, as it is the threshold where physiological issues can arise due to a decrease in cabin pressure. Above this altitude, the body may not receive adequate oxygen levels, making the deployment of oxygen masks essential for passengers and crew.

In the context of aircraft operations, understanding the specific altitude for oxygen mask deployment is vital for flight safety protocols. When the cabin altitude reaches 14,500 feet or higher, the electropneumatic actuating valve automatically activates the passenger oxygen masks, ensuring all individuals onboard have access to supplemental oxygen. This mechanism is an important safety feature in emergency scenarios, such as cabin depressurization.

Recognizing this altitude helps ensure preparedness and adherence to safety regulations, reinforcing the overall risk management strategy employed in aviation operations.