When an aircraft is in operation, an aviation oxygen system supplies oxygen to the passengers and crew. These devices are utilized when the cabin air pressure drops owing to the aircraft flying over 12,000 feet or in an emergency. As a highly aerobic creature, the human body utilizes oxygen at tissue levels to meet metabolic demands. The amount of oxygen accessible for breathing is af... https://www.globalinsightservices.com/reports/commercial-aircraft-oxygen-system-market